Thed van Leeuwen
Bijzonder hoogleraar Wetenschapsstudies
- Naam
- Prof.dr. T.N. van Leeuwen
- Telefoon
- +31 71 527 2727
- leeuwen@cwts.leidenuniv.nl
- ORCID iD
- 0000-0001-7238-6289
Zie profiel Thed van Leeuwen (in English).
Bijzonder hoogleraar Wetenschapsstudies
- Faculteit der Sociale Wetenschappen
- CWTS
Onderzoeker
- Faculteit der Sociale Wetenschappen
- CWTS
- Isager Peder M. Lakens Daniël van Leeuwen Thed van 't Veer Anna E. (2024), Exploring a formal approach to selecting studies for replication: A feasibility study in social neuroscience, Research Evaluation 171: 330-346.
- Borlaug Siri Brorstad Karaulova Maria Svartefoss Silje Marie Sivertsen Gunnar Meijer Ingeborg van Leeuwen Thed Hessels Laurens K (2024), Researchers engaging with society: who does what?, Science and Public Policy 51: 618-642.
- Isager P.M., Lakens D., Leeuwen T. van & Veer A.E. van 't (2023), Exploring a formal approach to selecting studies for replication: a feasibility study in social neuroscience, Cortex 171: 330-346.
- Abramo G., Aguillo I.F., Aksnes D.W., Boyack K., BurrellQL., Campanario J.M., Chinchilla-Rodríguez Z., Costas Comesana R., D’Angelo C.A., Harzing A., Jamali H.R., Larivière V., Leydesdorff L., Luwel M., Martin B., Mayr P., McCain K.W., Peters I., Rafols I., Robinson-Garcia N., Schubert T., Small H., Sugimoto C.R., Thelwall M., Besselaar P. van den, Leeuwen T.N/ van & Waltman L.R. (2022), Retraction of predatory publishing in Scopus: =evidence on cross-country differences lacks justification, Scientometrics 128(2): 1459-1461.
- Brasil A., Chen C.M. & van Leeuwen T. (2022), Analysing open access publishing beyond Plan S: motivations for publishing in Hybrid and Bronze OA formats. 26th International Conference on Science and Technology Indicators 7 september 2022 - 9 september 2022: Zenodo.
- Brasil Varandas Pinto A. & van Leeuwen T. (2022), The unseen costs of article processing charges: the different realities of Brazil and the Netherlands. 26th International Conference on Science and Technology Indicators 7 september 2022 - 9 september 2022: Zenodo.
- Sixto-Costoya A., Robinson-Garcia N., Leeuwen T.N. van & Costas Comesana R. (2021), Exploring the relevance of ORCID as a source of study of data sharing activities at the individual-level: a methodological discussion, Scientometrics 126(8): 7149-7165.
- Colavizza G., Costas Comesana R., Traag V.A., Eck N.J.P. van, Leeuwen T.N. van & Waltman L.R. (2021), A scientometric overview of CORD-19, PLoS ONE 16(1): e0244839.
- Waaijers L.J.M., Waltman L.R., Vries S.C.J. de, Leeuwen T.N. van & Eck N.J.P van (2 maart 2021), Bona Fide Journals: creating a predatory-free academic publishing environment. Leiden Madtrics. [blog].
- Rijcke S. de, Waltman L.R. & Leeuwen T.N van (19 mei 2021), Halt the h-index. Halt the h-index. Leiden University: Leiden Madtrics. [blog].
- Leeuwen T.N. van & Waltman S.R. (28 september 2021), Practicing what we preach: our journey toward open science. Leiden Madtrics. Leiden: Leiden University. [blog].
- Robinson-Garcia N., Costas R. & Leeuwen T.N. van (2020), Open Access uptake by universities worldwide, PeerJ 8: e9410 (e9410).
- Bieszczad S.R., Zuijderwijk J. & Leeuwen T.N. van (7 juli 2020), Could pre-Covid-19 research into coronaviruses have been otherwise?: Episode one: Careers. Could pre-Covid-19 research into coronaviruses have been otherwise? Episode one: Careers. Leiden University: Leiden Madtrics. [blog].
- Waaijer C.J.F., Ommering B.W.C., Van der Wurff L.J., Van Leeuwen T.N. & Dekker F.W. (2019), Scientific activity by medical students: the relationship between academic publishing during medical school and publication careers after graduation, Perspectives on Medical Education 8(4): 223-229.
- Ellemers N., Toorn J. van der, Paunov Y. & Leeuwen T. van (2019), The psychology of morality: A review and analysis of empirical studies published from 1940 through 2017, Personality and Social Psychology Review 23(4): 332-366.
- Rozing M.P., Leeuwen T.N. van, Reitsma P.H., Rosendaal F.R. & Aziz N.A. (2019), Freeloading in biomedical research, Scientometrics 122: 47-55.
- Colavizza G., Franssen T. & Leeuwen T.N. van (2019), An empirical investigation of the Tribes and their Territories: are research specialisms rural and urban?, Journal of Informetrics 13(1): 105-117.
- Leeuwen T.N. van Reyes Elizondo A.E. Rijcke S. de Wouters P.F. (2018), Policy brief for scientific and scholarly publishers nr. D 5.3. Nijmegen: Radboud Universiteit.
- Martín-Martín A., Costas Comesana R., Leeuwen T.N. van & López-Cózar E.D. (2018), Evidence of open access of scientific publications in Google Scholar: a large-scale analysis, Journal of Informetrics 12(3): 819-841.
- Van Leeuwen T.N., Clifford Tatum & Wouters P.F. (2018), Exploring Possibilities to Use Bibliometric Data to Monitor Gold Open Access Publishing at the National Level, Journal of the Association for Information Science and Technology 69(9): 1161-1173.
- Luwel M., Van Eck N.J. & Van Leeuwen T. (2018), The Schön case: Analyzing in-text citations to papers before and after retraction, Proceedings of the 23rd International Conference on Science and Technology Indicators. 23rd International Conference on Science and Technology Indicators 12 september 2018 - 14 september 2018. Leiden: 23rd International Conference on Science and Technology Indicators. 1025-1030.
- Robinson-Garcia N., Leeuwen T.N. van & Rafols I. (2018), Using altmetrics for contextualised mapping of societal impact: From hits to networks, Science and Public Policy 45(6): 815-826.
- Van Leeuwen T. (2018) Measuring Research: What Everyone Needs to Know. Bespreking van: Sugimoto C.R. & Lariviere V. (2018), Measuring Research: What Everyone Needs to Know. Journal of Informetrics 12(4): 1232-1234.
- Prins A., Spaapen J., Van Leeuwen T.N. & Van den Broek-Honingh N. (2018), QRiH: Towards a fitting system for humanities research evaluation . Pathways to Impact of SSH research 29 november 2018 - 29 november 2018. Vienna: Pathways to Impact of SSH research.
- De Rijcke S., Holtrop H., Kaltenbrunner W., Zuijderwijk J., Beaulieu A., Franssen T., Van Leeuwen T.N., Mongeon P., Tatum C.T., Valkenburg G. & Wouters P.F. (2018), Evaluative Inquiry: Engaging research evaluation analytically and strategically. Impact of Social Sciences and Humanities for a European Research Agenda – Valuation of SSH in mission-oriented research 28 november 2018 - 29 november 2018. Vienna: EU Council Conference on Impact of Social Sciences and Humanities for a European Research Agenda – Valuation of SSH in mission-oriented research.
- Martín-Martín A., Costas R., Van Leeuwen T.N. & Delgado López Cózar E. (2018), Unbundling Open Access dimensions: a conceptual discussion to reduce terminology inconsistencies, Proceedings of the 23rd International Conference on Science and Technology Indicators. STI Conference 12 september 2018 - 14 september 2018.
- Yegros A. & Leeuwen T.N. van (2018), Production and uptake of Open Access publications involving the private sector: the case of big pharma. Costas R., Franssen T. & Yegros A. (red.), Proceedings of the 23rd international conference on science and technology indicators. 23rd International Conference on Science and Technology Indicators 12 september 2018 - 14 september 2018. Leiden: CWTS. 958-966.
- Van Leeuwen T.N., Kool L.L. & Wijk I. (2018), National OA mandate and its potential conflicting relationship with international scientific cooperation policies: the Dutch case. Costas R., Franssen T. & Yegros-Yegros A. (red.). STI Conference 12 september 2018 - 14 september 2018. Leiden: STI Conference Proceedings.
- Van Leeuwen T.N., Meijer I., Yegros-Yegros A. & Costas R. (2018), Developing indicators on Open Access by combining evidence from diverse data sources. 2nd International Conference in Science & Technology Indicators (STI), 6-8 September, 2017, Paris, France 6 september 2017 - 8 september 2017. Paris, France: Proceedings of the 2017 STI Conference.
- Reyes Elizondo A.E. Rijcke S. de Leeuwen T.N. van (2017), Handling publishing misconduct: tools used by publishing houses and editors nr. PRINTEGER D 3.8. Nijmegen: Radboud Universiteit.
- Peterse E.F.P., Van Leeuwen T.N. & Cleton-Jansen A.M. (2017), In vitro studies of osteosarcoma: a researcher's perspective of quantity and quality, Journal of Bone Oncology 7: 29-31.
- Bruno K., Larsen K. & Van Leeuwen T.N. (2017), Knowledge production at industrial research institutes: Institutional logics and struggles for relevance in the Swedish Institute for Surface Chemistry, 1980-2005, Research Evaluation 26(4): 337-348.
- Aksnes D.W., Sivertsen G., Van Leeuwen T.N. & Wendt K.K. (2017), Measuring the productivity of national R&D systems: challenges in cross-national comparisons of R&D input and publication output indicators, Science and Public Policy 44(2): 246-258.
- Van Leeuwen T.N. & Wouters P.F. (2017), Analysis of Publications on Journal Impact Factor Over Time, Frontiers in Research Metrics and Analytics 2: e4.
- Berghmans S., Cousijn H., Deakin G., Meijer I., Mulligan A., Plume A., De Rijcke S., Rushforth A., Tatum C., Van Leeuwen T. & Waltman L. (2017), Open Data: The researcher perspective: CWTS / Elsevier / Universiteit Leiden.
- Schneider J.W., Aagaard K., Visser M.S. & Van Leeuwen T.N. (2017), Examining potential database effects in longitudinal country impact analyses using fixed journal sets. 2nd International Conference in Science & Technology Indicators (STI), 6-8 September, 2017, Paris, France 6 september 2017 - 8 september 2017: STI Conference, Paris, France.
- Prins A.A.M., Costas R., Van Leeuwen T.N. & Wouters P.F. (2016), Using Google Scholar in research evaluation of humanities and social science programs: A comparison with Web of Science data, Research Evaluation 25(3): 264-270.
- Van Welie S.D., Van Leeuwen T.N., Bouma C.J. & Klaassen A.B.M. (2016), The joint cardiovascular research profile of the university medical centres in the Netherlands, Netherlands Heart Journal 24(5): 308-316.
- Van Leeuwen T.N., Van Wijk E. & Wouters P.F. (2016), Bibliometric analysis of output and impact based on CRIS data: A case study on the registered output of a Dutch university, Scientometrics 106(1): 1-16.
- Díaz-Faes A., Bordons M. & Van Leeuwen T.N. (2016), Integrating metrics to measure research performance in social sciences and humanities: The case of the Spanish CSIC, Research Evaluation 25(4): 451-460.
- Robinson-Garcia N., Van Leeuwen T.N. & Rafols I. (2016), SSH & the City. A Network Approach for Tracing the Societal Contribution of the Social Sciences and Humanities for Local Development. STI Conference, 21st Int. Conf. on Science and Technology Indicators 14 september 2016 - 16 september 2016.
- Rushforth A., Yegros A., Mongeon P. & Van Leeuwen T.N. (2016), How does ‘undone science’ get funded? A bibliometric analysis linking Rare Diseases publications to national and European funding sources. EU-SPRI Early Career Researcher Conferences 21 november 2016 - 23 november 2016.
- Wooding S., Van Leeuwen T.N., Parks S., Kapur S. & Grant J. (2015), UK doubles its "world-leading" research in Life Sciences and Medicine in six years: Testing the claim?, PLoS ONE 10(7): e0132990.
- De Groot C.J.M., Van Leeuwen T.N., Mol B.J. & Waltman L. (2015), A longitudinal analysis of publications on maternal mortality, Paediatric and Perinatal Epidemiology 29(6): 481-489.
- Díaz-Faes A.A., Bordons M., Van Leeuwen T.N. & Purificación Galindo M. (2015), Outlining the scientific activity profile of researchers in the Social Sciences and Humanities in Spain: The case of CSIC, Proceedings of the 15th International Conference of the International Society for Scientometrics and Informetrics. 15th International Conference on Scientometrics and Informetrics (ISSI), 29 Jun-4 July, 2015, Bogazici University, Istanbul (Turkey) 29 juni 2015 - 4 juli 2015 548-553.
- Van Leeuwen T.N., Tatum C. & Wouters P.F. (2015), Open Access publishing and citation impact - An international study, Proceedings of the 15th International Conference of the International Society for Scientometrics and Informetrics. 15th International Conference on Scientometrics and Informetrics (ISSI), 29 Jun-4 July, 2015, Bogazici University, Istanbul (Turkey) 29 juni 2015 - 4 juli 2015 1130-1141.
- Aksnes D.W., Van Leeuwen T.N. & Sivertsen G. (2014), The effect of booming countries on changes in the relative specialization index (RSI) on country level, Scientometrics 101(2): 1391-1401.
- Van Leeuwen T.N. & Luwel M. (2014), An in-depth analysis of papers retracted in the Web of Science. Conference paper, Proceedings of the 19th International Conference on Science and Technology Indicators. . Leiden 337-344.
- Prins A., Costas R., Van Leeuwen T.N. & Wouters P.F. (2014), Using Google Scholar in research evaluation of social science programs, with a comparison with Web of Science data, Proceedings of the 18th International Conference on Science and Technology Indicators, Leiden, The Netherlands. . Leiden 434-443.
- Prins A., Costas R., Leeuwen T.N. van & Wouters P.F. (2014), Using Google Scholar in research evaluation of social science programs, with a comparison with Web of Science data, Proceedings of the 19th International Conference on Science and Technology Indicators. 19th International Conference on Science and Technology Indicators 3 september 2014 - 5 september 2015 434-443.
- Den Hertog P., Jager C.J., Vankan A., Te Velde R., Veldkamp J., Aksnes D.W., Sivertsen G., Van Leeuwen T.N. & Van Wijk E. (2014), Scholarly publication patterns in the social sciences and humanities and their relationship with research assessment. Thematic paper 2 Ministry of Education, Culture and Science nr. 2010.056-1436. Utrecht: Ministry of Education, Culture and Science.
- Den Hertog P., Jager C.-J., Vankan A., Te Velde R., Veldkamp J., Aksnes D.W., Sivertsen G., Van Leeuwen T.N. & Van Wijk E. (2014), Challenges in measuring the efficiency of national science, technology & innovation systems.
- Costas R., Leeuwen T.N. van & Raan A.F.J. van (2014), Erratum to "Effects of the durability of scientific literature at the group level: Case study of chemistry research groups in the Netherlands" [Res. Policy 42 (4) (2013) 886-894], Research Policy 43(8): 1468-1468.
- Schneider J.W. & Van Leeuwen T.N. (2014), Analyzing robustness and uncertainty levels of bibliometric performance statistics supporting science policy. A case study evaluating Danish post-doc funding, Research Evaluation 23(4): 285-297.
- Levi M.M., Sluiter H., Van Leeuwen T.N., Rook M. & Peters G. (2013), Medisch-wetenschappelijk onderzoek in Nederland. Hoge kwaliteit door samenwerking UMC's en opleidingsziekenhuizen, Nederlands Tijdschrift voor Geneeskunde 157: A6081.
- Waltman L., Van Eck N.J., Van Leeuwen T.N. & Visser M.S. (2013), Some modifications to the SNIP journal impact indicator, Journal of Informetrics 7(2): 272-285.
- Van Leeuwen T. (2013), Publication trends in social psychology journals: A long-term bibliometric analysis, En Letra 43(1): 9-11.
- Van Leeuwen T.N., Van Wijk E. & Wouters P.F. (2013), Recent developments in Dutch research assessment. Scholarly activity in AAH and Law in a new perspective, Proceedings of the 18th Conference on Science and Technology Indicators. 396-398.
- Schneider J.W. & Van Leeuwen T.N. (2013), Is post-doc funding stimulating research performance? Evidence from Danish research policy!, Proceedings of the 18th International Conference on Science and Technology Indicators. 352-361.
- Van Leeuwen T.N. & Wouters P.F. (2013), Analysis of journal impact factor research in time: Development of a specialty?, Proceedings of the 14th Conference of the International Society for Scientometrics and Informetrics. 66-77.
- Aksnes D., Van Leeuwen T.N. & Sivertsen G. (2013), The effect of booming countries on changes in the Relative Specialization Index (RSI) on country level , Proceedings of the 14th Conference of the International Society for Scientometrics and Informetrics. 654-663.
- Costas Comesana R., Leeuwen T.N. van & Raan A.F.J.van (2013), Effects of the durability of scientific literature at the group level: case study of chemistry research groups in the Netherlands, Research Policy 42(4): 886-894.
- Leeuwen T. van, Costas Comesana R., Calero-Medina C. & Visser M. (2013), The role of editorial material in bibliometric research performance assessments, Scientometrics 95(2): 817-828.
- Van Leeuwen T.N., Kriegsman L., Van Tol J. & Schokkenbroek J. (2013), The changing role of museums in the global scientific landscape, Journal of Scientometric Research 2(2): 137-145.
- Van Leeuwen T.N. (2013), Bibliometric research evaluations, Web of Science and the Social Sciences and Humanities: A problematic relationship?, Bibliometrie - Praxis und Forschung 2: 1-18.
- Leeuwen T.N. van (2012), Discussing some basic critique on Journal Impact Factors: Revision of earlier comments, Scientometrics 92: 443-455.
- Nederhof Anton J., Leeuwen T.N. van & Clancy P. (2012), Calibration of bibliometric indicators in space exploration research: a comparison of citation impact measurement of the space and ground-based life and physical sciences, Research Evaluation 21(1): 79-85.
- Leeuwen T.N. van & Moed H.F. (2012), Funding decisions, peer review and scientific excellence in physical sciences, chemistry and geosciences, Research Evaluation 21(3): 189-198.
- Leeuwen T.N. van & Calero Medina C.M. (2012), Redefining the field of economics: Improving field normalization for the application of bibliometric techniques in the field of economics, Research Evaluation 21: 61-70.
- Waltman L., Calero-Medina C.M., Kosten J., Noyons E.C.M., Tijssen R.J.W., Van Eck N.J., Van Leeuwen T.N., Van Raan A.F.J., Visser M.S. & Wouters P.F. (2012), The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation, Proceedings of the 17th International Conference on Science and Technology Indicators. 791-802.
- Den Hertog P., Jager C.J., Te Velde R., Veldkamp J., Sivertsen G., Aksnes D., Van Leeuwen T.N. & Van Wijk E. (2012), WTI2 wetenschaps- en technologie & innovatie indicatoren: WTI2 Consortium.
- Waltman L.R., Calero Medina C.M., Kosten J., Noyons E.C.M., Tijssen R.J.W., Van Eck N.J.P., Leeuwen T.N. van, Raan A.F.J. van, Visser M.S. & Wouters P. (2012), The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation: Centre for Science and Technology Studies, Leiden University.
- Leeuwen T.N. van, Costas R., Calero Medina C.M. & Visser M.S. (2012), The role of editorial material in bibliometric research performance assessments, Proceedings of the 17th International Conference on Science and Technology Indicators, Montreal, Canada. 17th International Conference on Science and Technology Indicators 511-522.
- Waltman L.R., Van Eck N.J.P., Van Leeuwen T.N. & Visser M.S. (2012), Some modifications to the SNIP journal impact indicator: Centre for Science and Technology Studies, Leiden University.
- Costas R. & Van Leeuwen T.N. (2012), New indicators based on the 'Funding Acknowledgment' information in the Web of Science: analysis of the effect of peer review over the impact of scientific journals, Proceedings of the 17th International Conference on Science and Technology Indicators, Montreal, Canada. 17th International Conference on Science and Technology Indicators, Montreal, Canada 193-205.
- Waltman L.R., Calero-Medina C.M., Kosten J., Noyons E.C.M., Tijssen R.J.W., Van Eck N.J.P., Leeuwen T.N. van, Raan A.F.J. van, Visser M.S. & Wouters P. (2012), The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation, Journal of the American Society for Information Science and Technology 63(12): 2419-2432.
- Costas Comesana R., Leeuwen T.N. van & Bordons M. (2012), Referencing patterns of individual researchers: do top scientists rely on more extensive information sources?, Journal of the American Society for Information Science and Technology 63(12): 2433-2450.
- Costas Comesana R. & Leeuwen T.N. van (2012), Approaching the "reward triangle": general analysis of the presence of funding acknowledgments and "peer interactive communication" in scientific publications, Journal of the American Society for Information Science and Technology 63(8): 1647-1661.
- Calero Medina C.M. & Leeuwen T.N. van (2012), Seed journal citation network maps: A method based on network theory, 63(6): 1226-1234.
- Waltman L.R., Van Eck N.J.P., Leeuwen T.N. van, Visser M.S. & Raan A.F.J. van (2011), On the correlation between bibliometric indicators and peer review: Reply to Opthof and Leydesdorff, Scientometrics 88(3): 1017-1022.
- Zuccala A.A. & Leeuwen T.N. van (2011), Book Reviews in Humanities Research Evaluations, 62: 1979-1991.
- Raan A.F.J. van, Leeuwen T.N. van & Visser M.S. (2011), Severe language effect in university rankings: particularly Germany and France are wronged in citation-based rankings, Scientometrics 88(2): 495-498.
- Waltman L.R., Van Eck N.J.P., Leeuwen T.N. van, Visser M.S. & Raan A.F.J. van (2011), Towards a new crown indicator: An empirical analysis, Scientometrics 87(3): 467-481.
- Waltman L.R., Eck N.J.P. van, Leeuwen T.N. van, Visser M.S. & Raan A.F.J. van (2011), On the correlation between bibliometric indicators and peer review: reply to Opthof and Leydesdorff, Scientometrics 88: 1017-1022.
- Raan A.F.J. van, Leeuwen T. N. van & Visser M.S. (2011), Severe language effect in university rankings: particularly Germany and France are wronged in citation-based rankings, Scientometrics 88: 495-498.
- Zuccala A. & Leeuwen T.N. van (2011), Book Reviews in Humanities Research Evaluations, Proceedings of the 13th Conference of the International Society of Scientometrics and Informetrics. 936-941.
- Zuccala A.A. & Van Leeuwen T.N. (2011), Book reviews in humanities research evaluations: Centre for Science and Technology Studies, Leiden University.
- Zuccala A.A. & Van Leeuwen T.N. (2011), Book Reviews in Humanities Research Evaluations, Proceedings of the 13th Conference of the International Society for Scientometrics and Informetrics. Proceedings of the 13th Conference of the International Society for Scientometrics and Informetrics, Durban, South Africa, July 4-7, 2011..
- Van Eyk H.J., Hooiveld H.M., Van Leeuwen T.N., Van der Wurff L.J., De Craen A.J.M. & Dekker F.W. (2011), Scientific output of Dutch medical students, Tijdschrift voor Medisch Onderwijs 30(3): 72-79.
- Costas Comesana R., Van Leeuwen T.N. & Bordons M. (2011), Referencing patterns among individual researchers: study of the use of scientific literature from a micro-level perspective. Noyons E., Ngulube P. & Leta J. (red.), Proceedings of the 13th International Conference of the International Society for Scientometrics and Informetrics. Proceedings of the 13th Conference of the International Society for Scientometrics and Informetrics, Durban, South Africa, July 4-7, 2011. PROCEEDINGS OF ISSI 2011: THE 13TH CONFERENCE OF THE INTERNATIONAL SOCIETY FOR SCIENTOMETRICS AND INFORMETRICS, VOLS 1 AND 2 nr. 2011 163-174.
- Costas R., Leeuwen T.N. van & Raan A.F.J. van (2011), The "Mendel syndrome" in science: durability of scientific literature and its effects on bibliometric analysis of individual scientists, Scientometrics 89(1): 177-205.
- Raan A.F.J. van, Leeuwen T.N. van & Visser M.S. (2011), Non-English papers decrease rankings, 469(7328): 34.
- Waltman L.R., Van Eck N.J.P., Leeuwen T.N. van, Visser M.S. & Raan A.F.J. van (2011), Towards a new crown indicator: Some theoretical considerations, Journal of Informetrics 5(1): 37-47.
- Eyk H.J. van, Hooiveld M.H.W., Leeuwen T.N. van, Wurff L.J van der, Craen A.J.M. de & Dekker F.W. (2010), Scientific output of Dutch medical students, Medical Teacher 32(3): 231-235.
- Tijssen R.J.W., Nederhof Anton J., Van Leeuwen T.N., Hollanders H., Kanerva M. & Van den Berg P. (2010), Wetenschaps- en Technologie -Indicatoren 2010: Nederlands Observatorium van Wetenschap en Technologie (NOWT).
- Raan A.F.J. van, Leeuwen T.N. van, Visser M.S., Van Eck N.J.P. & Waltman L.R. (2010), Rivals for the crown: Reply to Opthof and Leydesdorff. Leiden: SW Centrum Wetensch. & Techn. Studies (CWTS).
- Costas Comesana R., Leeuwen T.N. van & Raan A.F.J. van (2010), Is scientific literature subject to a 'sell-by-date'? : A general methodology to analyze the 'durability' of scientific documents, Journal of the American Society for Information Science and Technology 61(2): 329-339.
- Costas Comesana R., Leeuwen T.N. van & Bordons M. (2010), Self-citations at the meso and individual levels: effects of different calculation methods, Scientometrics 82(3): 517-537.
- Costas Comesana R., Leeuwen T.N. van & Bordons M. (2010), A bibliometric classificatory approach for the study and assessment of research performance at the individual level: the effects of age on productivity and impact, Journal of the American Society for Information Science and Technology 61(8): 1564-1581.
- Raan A.F.J. van, Leeuwen T.N. van, Visser M.S., Van Eck N.J.P. & Waltman L.R. (2010), Rivals for the crown: Reply to Opthof and Leydesdorff, Journal of Informetrics 4(3): 431-435.
- Van der Velde A.E., Van Leeuwen T.N., Van Welie S.D., Stam J.C.G. & Klaassen A.B.M. (2010), De kwaliteit van het cardiovasculair wetenschappelijk onderzoek in Nederland: De toegevoegde waarde van de Nederlandse Hartstichting, Nederlands Tijdschrift voor Geneeskunde 154: A803.
- Nederhof Anton J., Leeuwen T.N. van & Raan A.F.J. van (2010), Highly cited non-journal publications in political science, economics and psychology: a first exploration, Scientometrics 83(2): 363-374.
- Leeuwen T.N. van (2009), Using bibliometrics to support the procurement of NIHR biomedical research centres in England, Research Evaluation 18(1): 71-82.
- Leeuwen T.N. van & Calero Medina C. (2009), Redefining the Field of Economics: Improving Field Normalization for the Application of Bibliometric Techniques in the Field of Economics, Proceedings of the 12th International Conference on Scientometrics and Informetrics. . PROCEEDINGS OF ISSI 2011: THE 13TH CONFERENCE OF THE INTERNATIONAL SOCIETY FOR SCIENTOMETRICS AND INFORMETRICS, VOLS 1 AND 2 410-420.
- Van Leeuwen T.N. & Calero Medina C.M. (2009), Redefining the field of economics: Improving field normalization for the application of bibliometric techniques in the field of economics, 12th International Conference on Scientometrics and Informetrics. ISSI 2009. Rio de Janeiro: BIREME/PAHO/WHO.
- Costas Comesana R., Leeuwen T.N. van & Raan A.F.J. van (2009), Development of a general methodology for the analysis of the "durability" of scientific documents. Larsen B. & Leta J. (red.), Proceedings of the 12th international conference on scientometrics and informetrics. ISSI 2009 nr. 2. Rio de Janeiro: BIREME/PAHO/WHO/Federal University of Rio de Janeiro . 918-919.
- Costas Comesana R., Bordons M., Leeuwen T.N. van & Raan A.F.J. van (2009), Scaling rules in the science system: influence of field-specific citation characteristics on the impact of individual researchers, Journal of the American Society for Information Science and Technology 60(4): 740-753.
- Tijssen R.J.W., Leeuwen T.N. van & Van Wijk E. (2009), Benchmarking university-industry research cooperation worldwide: performance measurements and indicators based on co-authorship data for the world's largest universities, Research Evaluation 18(1): 13-24.
- Leeuwen T.N. van (2009), Strength and weakness of national science systems: A bibliometric analysis through cooperation patterns, Scientometrics 79(2): 389-408.
- Leeuwen T.N. van (2008), Testing the validity of the Hirsch-index for research assessment purposes, Research Evaluation 17(2): 157-160.
- Tijssen R.J.W., Nederhof A.J. & Van Leeuwen T.N. (2008), Wetenschaps- en Technologie -Indicatoren 2008: Nederlands Observatorium van Wetenschap en Technologie (NOWT).
- Nederhof Anton J., Van Leeuwen T.N. & Clancy P. (2008), Boom or bust in space exploration research: A methodological study of bibliometric monitoring and policy implications. Gorraiz J. & Schiebel E. (red.), Excellence and emergence. A new challenge for the combination of quantitative and qualitative approaches. . Vienna 109-111.
- Van Leeuwen T.N. (10 juni 2008), Publish or Perish. Presentatie van de 3TU studie voor het CvB en de verzamelde Decanen. Eindhoven. [lezing].
- Lambers Heerspink H.J., Knol M.J., Tijssen R.J.W., Leeuwen T.N. van, Grobbee D.E. & Zeeuw D. de (2008), Is the randomised controlled drug trial in Europe lagging behind the US?, British Journal of Clinical Pharmacology 66: 774-790.
- Van Leeuwen T.N. (21 oktober 2008), Results of the bibliometric study on the VUmc research output. Presentatie van de resultaten van de analyse van het VUmc voor decaan & instituutsdirecteuren. Amsterdam. [lezing].
- Van Leeuwen T.N. (27 november 2008), Bibliometric analysis on Dublin City University 1997-2006. Presentatie van de resultaten en methoden & technieken voor de DCU Deans & Heads of Schools. Dublin. [lezing].
- Leeuwen T.N. van (2007), Modelling of bibliometric approaches and importance of output verification in research performance assessment, Research Evaluation 16(2): 93-105.
- Tijssen Robert J.W. & Van Leeuwen Thed.N. (2007), Research cooperation within Europe: Bibliometric views of geographical trends and integration processes, Proceedings of the 11th Conference of the International Society of Scientometrics and Informetrics. . Proceedings of ISSI 2007: 11th International Conference of the International Society for Scientometrics and Informetrics, Vols I and II 740-744.
- Van Leeuwen Thed N. & Tijssen Robert J.W. (2007), Strength and weakness of national science systems. A bibliometric analysis through cooperation patterns, Proceedings of the 11th Conference of the International Society for Scientometrics and Informetrics. . Proceedings of ISSI 2007: 11th International Conference of the International Society for Scientometrics and Informetrics, Vols I and II 469-479.
- Dekker F.W., De Craen A.J.M. & Van Leeuwen T.N. (14 november 2007), Bruikbaarheid van een bibliometrische maat als kwaliteits-indicator voor het onderwijs wetenschappelijke vorming aan studenten geneeskunde. Presentatie op de NVMO. Egmond aan Zee. [lezing].
- Leeuwen T.N. van (2007), The application of bibliometric analyses in the evaluation of social science research. Who benefits from it, and why it is still feasible, Scientometrics 66: 133-154.
- Leeuwen T.N. van, Wurff L.J van der & Craen A.J.M. de (2007), Classification of research letters in general medical journals and its consequences in bibliometric research evaluation procresses, Research Evaluation 16: 59-63.
- Calero Medina C.M., Leeuwen T.N. van & Tijssen R.J.W. (2007), Research cooperation within the bio-pharmaceutical industry: Network analyses of co-publications within and between firms, Scientometrics 71(1): 87-99.
- Looy B. van, Debackere K., Callaert C., Tijssen R.J.W. & Leeuwen T.N. van (2006), Scientific capabilities and technological performance of national innovation systems: An exploration of emerging industrial relevant research domains, Scientometrics 66: 295-310.
- Tijssen R.J.W., Mouton J., Leeuwen T.N. van & Boshoff N. (2006), How relevant are local scholarly journals in global science? A case study of South Africa, Research Evaluation 15(3): 163-174.
- Tijssen R.J.W. & Leeuwen T.N. van (2006), Measuring impacts of academic science on industrial research: A citation-based approach, Scientometrics 66: 55-69.
- Calero C., Leeuwen T.N. van & Tijssen R.J.W. (2005), Research networks of pharmaceutical firms: Geographical patterns of research collaboration within and between firms, Proceedings of the 10th International Conference of the International Society for Scientometrics and Informetrics. . ISSI 2005: Proceedings of the 10th International Conference of the International Society for Scientometrics and Informetrics, Vols 1 and 2 310-315.
- Tijssen R.J.W., Hollanders H., Van Leeuwen T.N. & Nederhof Anton J. (2005), Wetenschaps- en Technologie-Indicatoren 2005: Nederlands Observatorium van Wetenschap en Technologie (NOWT).
- Leeuwen T.N. van & Moed H.F. (2005), Characteristics of Journal Impact Factors: The effects of uncitedness and citation distribution on the understanding of journal impact factors, Scientometrics 63: 357-371.
- Leeuwen T.N. van (2004), Descriptive versus evaluative bibliometrics. In: , Handbook of Quantitative Science and Technology Research. The use of publication and patent statistics in studies of S&T systems 373-389.
- Van Looy B.K., Debackere K., Callaert J., Tijssen R.J.W. & Van Leeuwen T.N. (2004), National scientific capabilities and technological performance: An exploration of emerging industrial relevant research domains, Proceedings of the 2004 S&T Indicators Conference, Leiden, The Netherlands. 178-188.
- Van Leeuwen T.N. & Visser M.S. (2004), Results of the bibliometric study on Dutch genomics research. Leiden: CWTS BV.
- Van Leeuwen T.N. (2004), Descriptive versus evaluative bibliometrics. In: Moed H.F., Glanzel W. & Schmoch U. (red.), Handbook of Quantitative Science and Technology Research: The use of publication and patent statistics in studies on S&T Systems. Dordrecht: Kluwer Academic Publishers. 373-388.
- Van Leeuwen T.N. (19 mei 2004), Second generation bibliometric indicators. The improvement of existing and development of new bibliometric indicators for research and journal performance assessment procedures (Dissertatie, Faculty of Social and Behavioural Sciences, Leiden University): Leiden University. Promotor(en): Raan A.F.J. van.
- Van Leeuwen T.N. (19 mei 2004), Second generation bibliometric indicators (Dissertatie, Leiden University). Promotor(en): Raan A.F.J. van.
- Leeuwen T.N. van, Visser M.S., Moed H.F., Nederhof Anton J. & Raan A.F.J. van (2003), The Holy Grail of science policy: Exploring and combining bibliometric tools in search of scientific excellence, Scientometrics 57: 257-280.
- Raan A.F.J. van, Visser M.S., Leeuwen T.N. van & Van Wijk E. (2003), Bibliometric analysis of Psychotherapy Research: Performance assessment and position in the journal landscape, Psychotherapy Research 13(4): 511-528.
- Tijssen R.J.W., Van Leeuwen T.N., Luo Y.-L., Hung W.C., Tsai M.H., Chang L.D., Hsiao Y.P. & Chen H.L. (2003), Macro level bibliometric analysis of Taiwanese Science 1995-2001: Science and Technology Information Center, National Research Council of Taiwan.
- Rinia E.J., Van Leeuwen T.N., Kouw L.R. & Van Raan A.F.J. (2003), Can bibliometrics contribute to the study of interdisciplinary influence: A case study of physics, Proceedings of the 9th Conference of the International Society for Scientometrics and Informetrics. . Beijing 341-349.
- Tijssen R.J.W., Hollanders H., Van Leeuwen T.N. & Nederhof A.J. (2003), Wetenschaps- en Technologie -Indicatoren 2003: Nederlands Observatorium van Wetenschap en Technologie (NOWT).
- Van Leeuwen T.N. & Van Raan A.F.J. (2002), Wise Men’s Heritage. Bibliometric study of the research funded by the Netherlands Epilepsy Foundation (NEF) 1981-2000: National Epilepsy Fund.
- Tijssen R.J.W., Van Leeuwen T.N. & Van Raan A.F.J. (2002), Mapping the scientific performance of German medical research. An international comparative bibliometric study.
- Tijssen R.J.W., Visser M.S. & Leeuwen T.N. van (2002), Benchmarking international scientific excellence: Are highly cited research papers an appropriate frame of reference?, Scientometrics 54(3): 381-397.
- Rinia E.J., Leeuwen T.N. van, Bruins E.E.W., Vuren H.G. van & Raan A.F.J. van (2002), Measuring knowledge transfer between fields of science, Scientometrics 54(3): 347-362.
- Leeuwen T.N. van & Moed H.F. (2002), Development and application of journal impact measures in the Dutch science system, Scientometrics 53(2): 249-266.
- Rinia E.J., Leeuwen T.N. van & Raan A.F.J. van (2002), Impact measures of inderdisciplinary research in physics, Scientometrics 53(2): 241-248.
- Raan A.F.J. van & Leeuwen T.N. van (2002), Assessment of the scientific basis of interdisciplinary, applied research. Application of bibliometric methods in Nutrition and Food Research, 31(4): 611-632.
- Rinia E.J., Leeuwen T.N. van, Vuren H.G. van & Raan A.F.J. van (2001), Influence of interdisciplinarity on peer-review and bibliometric evaluations in physics research, 30(3): 357-361.
- Van Raan A.F.J., Leeuwen T.N. van & Visser M.S. (2001), Bibliometrics – Monitoring emerging fields A bibliometric methodology for exploring interdisciplinary, 'unorthodox' fields of science. A case study of environmental medicine. In: Maasen S. & Winterhager M. (red.), Science Studies. Probing the dynamics of scientific knowledge. 87-122.
- Van Leeuwen T.N. & Moed H.R. (2001), Overview of the development and application of journal impact measures within the dutch science system, Proceedings of the 8th Conference of the International Society for Scientometrics and Informetrics. . Proceedings of the 8th International Conference on Scientometrics and Informetrics, Vols 1 and 2 - ISSI 19-20.
- Tijssen R.J.W., Visser M.S. & Leeuwen T.N. van (2001), Searching for scientific excellence: Scientometric measurements and citation analyses of national research systems, Proceedings of the 8th Conference of the International Society for Scientometrics and Informetrics. . Proceedings of the 8th International Conference on Scientometrics and Informetrics, Vols 1 and 2 - ISSI 675-689.
- Rinia E.J., Leeuwen T.N. van, Vuren H.G. van & Raan A.F.J. van (2001), Impact measures of interdisciplinary research programs in physics, Proceedings of the 8th Conference of the International Society for Scientometrics and Informetrics. . Proceedings of the 8th International Conference on Scientometrics and Informetrics, Vols 1 and 2 - ISSI 10-11.
- Rinia E.J., Leeuwen T.N. van, Bruins E.E.W., Vuren H.G. van & Raan A.F.J. van (2001), Measuring knowledge transfer between fields of science, Proceedings of the 8th Conference of the International Society for Scientometrics and Informetrics. . Proceedings of the 8th International Conference on Scientometrics and Informetrics, Vols 1 and 2 - ISSI 597-605.
- Leeuwen T.N. van & Moed H.F. (2001), Development and application of new journal impact measures, Cortex 37(4): 607-610.
- Leeuwen T.N. van, Wurff L.J. van der & Raan A.F.J. van (2001), The use of combined bibliometric methods in research funding policy, Research Evaluation 10(3): 195-201.
- Leeuwen T. N. van, Moed H.F., Tijssen R.J.W., Visser M.S. & Raan A.F.J. van (2001), Language biases in the coverage of the Science Citation Index and its consequences for international comparisons of national research performance, Scientometrics 51(1): 335-346.
- Rinia E.J., Leeuwen T.N. van, Bruins E.E.W., Vuren H.G. van & Raan A.F.J. van (2001), Citation delay in interdisciplinary knowledge exchange, Scientometrics 51(1): 293-309.
- Tijssen R.J.W., Van Leeuwen T.N., Hollanders H. & Verspagen B. (2000), Wetenschaps- en Technologie -Indicatoren 2000: Nederlands Observatorium van Wetenschap en Technologie (NOWT).
- Nederhof A.J., Van Leeuwen T.N. & Visser M.S. (2000), Bibliometric profiles of academic psychology research in the Netherlands. Leiden: CWTS.
- Leeuwen T.N. van & Tijssen R.J.W. (2000), Interdisciplinary dynamics of modern science: analysis of cross-disciplinary citation flows, Research Evaluation 9(3): 183-187.
- Leeuwen T.N. van, Moed H.F., Tijssen R.J.W., Visser M.S. & Raan A.F.J. van (2000), First evidence of serious language-bias in the use of citation analysis for the evaluation of national science systems, Research Evaluation 9(2): 155-156.
- Tijssen R.J.W., Buter R.K. & Leeuwen T.N. van (2000), Technological relevance of science: An assessment of citation linkages between patents and research papers, Scientometrics 47(2): 389-412.
- Moed H.F., Leeuwen T.N. van & Reedijk J. (1999), Towards appropriate indicators of journal impact, Proceedings of the 7th Conference of the International Society for Scientometrics and Informetrics. Lecture international, 7th Conference of the International Society for Scientometrics and Informetrics (ISSI). Proceedings of the 7th Conference of the International Society for Scientometrics and Informetrics: Universidad de Colima . 341-354.
- Nederhof A.J., Leeuwen T.N. van & Visser M.S. (1999), Bibliometric profiles of academic biology research in the Netherlands, 1988-1997. In: Meijerink M.H. (red.), VSNU, Biology. Utrecht: VSNU. 141-186.
- Nederhof A.J., Van Leeuwen T.N., Visser M.S. & Van der Wurff L.J. (1999), Bibliometric profiles of academic veterinary and animal sciences research in the Netherlands. In: Meijerink M.H. (red.), VSNU, Veterinary and animal sciences. Utrecht: VSNU. 51-91.
- Moed H.F., Van Leeuwen T.N. & Visser M.S. (1999), Trends in publications output and impact of universities in the Netherlands, Research Evaluation 8(1): 60-67.
- Leeuwen T.N. van, Moed H.F. & Reedijk J. (1999), Critical comments on Institute for Scientific information impact factors: a sample of inorganic molecular chemistry journals, Journal of Information Science 25(6): 489-498.
- Moed H.F., Leeuwen T.N. van & Reedijk J. (1999), Towards appropriate indicators of journal impact, Scientometrics 46(3): 575-589.
- Moed H.F., Leeuwen T.N. & Visser M.S. (1999), Trends in publication output and impact of universities in the Netherlands, Research Evaluation 8(1): 60-67.
- Rinia E.J., Leeuwen T.N. van, Vuren H.G. van & Raan A.F.J. van (1998), Comparative analysis of a set of bibliometric indicators and central peer review criteria - Evaluation of condensed matter physics in the Netherlands, 27(1): 95-107.
- Tijssen R.J.W., Van Leeuwen T.N., Verspagen B. & Hollanders H. (1998), Wetenschaps- en Technologie -Indicatoren 1998: Nederlands Observatorium van Wetenschap en Technologie (NOWT).
- Nederhof A.J., Van Leeuwen T.N. & Visser M.S. (1998), A bibliometric analysis of the Netherlands School of Primery Care Research (CaRe). Leiden: Centre for Science and Technology Studies (CWTS).
- Moed H.F., Leeuwen T.N. van & Reedijk J. (1998), A new classification system to describe the ageing of scientific journals and their impact factors, Journal of Documentation 54(4): 387-419.
- Nederhof A.J., Van Leeuwen T.N. & Visser M.S. (1998), A Bibliometric analysis of the Faculty of Medicine, University of Groningen: a decade of research. Leiden: Centre for Science and Technology Studies (CWTS).
- Nederhof A.J., Van Leeuwen T.N. & Visser M.S. (1998), A bibliometric study of natural and life sciences, University of Utrecht (1986-1995). Leiden: Centre for Science and Technology Studies (CWTS).
- Rinia E.J., Van Vuren H.G., Van Leeuwen T.N. & Van Raan A.F.J. (1997), Scientometric indicators and peer evaluations: condensed matter physics in the Netherlands, Proceedings of the 6th Conference of the International Society for Scientometrics and Informetrics. . Jeruzalem 361-371.
- Nederhof A.J., Van Leeuwen T.N. & Visser M.S. (1997), A bibliometric study of the Faculty of Mathematics and Natural Sciences (RUG). Leiden: Centre for Science and Technology Studies (CWTS).
- Nederhof A.J., Van Leeuwen T.N. & Visser M.S. (1997), A comparative bibliometric study of the Kurt Lewin Institute (KLI). Leiden: Centre for Science and Technology Studies (CWTS).
- Nederhof A.J., Van Leeuwen T.N. & Visser M.S. (1997), A comparative bibliometric study of ALIFI (1986-1995). Leiden: Centre for Science and Technology Studies (CWTS).
- Tijssen R.J.W., Van Leeuwen T.N., Verspagen B. & Slabbers M. (1996), Wetenschaps- en Technologie -Indicatoren 1996: Nederlands Observatorium van Wetenschap en Technologie (NOWT).
- Tijssen R.J.W., Leeuwen T.N. van & Korevaar J.C. (1996), Scientific publication activity of industry in the Netherlands, Research Evaluation 6(2): 105-119.
- Moed H.F., Leeuwen T.N. van & Reedijk J. (1996), A critical analysis of the journal impact factors of Angewandte Chemie and the Journal of the American Chemical Society - Inaccuracies in published impact factors based on overall citations only, Scientometrics 37(1): 105-116.
- Moed H.F. & Leeuwen T.N. van (1996), Impact factors can mislead, 381(6579): 186-186.
- Moed H.F. & Leeuwen T.N. van (1995), Improving the accuracy of institute for scientific information's journal impact factors, Journal of the American Society for Information Science 46(6): 461-467.
- Tijssen R.J.W. & Leeuwen T.N. van (1995), On generalising scientometric journal mapping beyond ISI's journal and citation databases, Scientometrics 33(1): 93-116.
- Moed H.F., Bruin R.E. de & Leeuwen T.N. van (1995), New bibliometric tools for the assessment of national research performance: Database description, overview of indicators and first applications, Scientometrics 33(3): 381-422.
- Tijssen R.J.W., Van Leeuwen T.N., Verspagen B. & Slabbers M. (1994), Wetenschaps- en Technologie -Indicatoren 1994: Nederlands Observatorium van Wetenschap en Technologie (NOWT).
- Van Leeuwen T.N. & Tijssen R.J.W. (1993), Assessing Multidisciplinary Area's of Science and Technology - A synthetic Bibliometric Study of Dutch Nuclear-Energy Research, Scientometrics 26(1): 115-133.