IDEAS home Printed from https://ideas.repec.org/a/eee/respol/v50y2021i6s0048733321000159.html
   My bibliography  Save this article

The impact of public funding on science valorisation: an analysis of the ERC Proof-of-Concept Programme

Author

Listed:
  • Munari, Federico
  • Toschi, Laura

Abstract

Governments and public agencies are increasingly keen to support the translation of scientific discoveries into commercial and societal applications through science valorisation funding, as a way to enhance progress and inclusive growth. In this paper, we use grant-level data from the European Research Council Proof-of-Concept (PoC) programme, in order to assess the impact of public funding on a broad set of science valorisation outcomes, including licensing, spinoff formation, R&D collaborations, consulting and access to follow-on funding. We employ an instrumental variable approach to compare the valorisation outcomes of projects that obtained an ERC PoC grant to a group of projects that applied to the PoC scheme but were not funded. We find that the programme was effective in fostering the early valorisation of scientific discoveries by all measures of success that we employed. Overall, thus, our findings speak in favour of this type of policy instrument as a catalyst to accelerate the transition of scientific breakthroughs towards practical applications.

Suggested Citation

  • Munari, Federico & Toschi, Laura, 2021. "The impact of public funding on science valorisation: an analysis of the ERC Proof-of-Concept Programme," Research Policy, Elsevier, vol. 50(6).
    • Handle: RePEc:eee:respol:v:50:y:2021:i:6:s0048733321000159
    DOI: 10.1016/j.respol.2021.104211
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0048733321000159
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.respol.2021.104211?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Czarnitzki, Dirk & Lopes-Bento, Cindy, 2013. "Value for money? New microeconometric evidence on public R&D grants in Flanders," Research Policy, Elsevier, vol. 42(1), pages 76-89.
    2. Frietsch, Rainer & Haller, Inna & Funken-Vrohlings, Melanie & Grupp, Hariolf, 2009. "Gender-specific patterns in patenting and publishing," Research Policy, Elsevier, vol. 38(4), pages 590-599, May.
    3. Jeff S. Armstrong & Michael R. Darby & Lynne G. Zucker, 2003. "Commercializing knowledge: university science, knowledge capture and firm performance in biotechnology," Proceedings, Federal Reserve Bank of Dallas, issue Sep, pages 149-170.
    4. Sebastian Calonico & Matias D. Cattaneo & Rocio Titiunik, 2014. "Robust data-driven inference in the regression-discontinuity design," Stata Journal, StataCorp LP, vol. 14(4), pages 909-946, December.
    5. Auerswald, Philip E & Branscomb, Lewis M, 2003. "Valleys of Death and Darwinian Seas: Financing the Invention to Innovation Transition in the United States," The Journal of Technology Transfer, Springer, vol. 28(3-4), pages 227-239, August.
    6. Fiona Murray & Leigh Graham, 2007. "Buying science and selling science: gender differences in the market for commercial science," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 16(4), pages 657-689, August.
    7. Christine Gulbranson & David Audretsch, 2008. "Proof of concept centers: accelerating the commercialization of university innovation," The Journal of Technology Transfer, Springer, vol. 33(3), pages 249-258, June.
    8. Samantha Bradley & Christopher Hayter & Albert Link, 2013. "Proof of Concept Centers in the United States: an exploratory look," The Journal of Technology Transfer, Springer, vol. 38(4), pages 349-381, August.
    9. Angrist, Joshua D, 2001. "Estimations of Limited Dependent Variable Models with Dummy Endogenous Regressors: Simple Strategies for Empirical Practice," Journal of Business & Economic Statistics, American Statistical Association, vol. 19(1), pages 2-16, January.
    10. Meng, Yu, 2016. "Collaboration patterns and patenting: Exploring gender distinctions," Research Policy, Elsevier, vol. 45(1), pages 56-67.
    11. Stock, James H & Wright, Jonathan H & Yogo, Motohiro, 2002. "A Survey of Weak Instruments and Weak Identification in Generalized Method of Moments," Journal of Business & Economic Statistics, American Statistical Association, vol. 20(4), pages 518-529, October.
    12. Hottenrott, Hanna & Lawson, Cornelia, 2013. "Fishing for Complementarities: Competitive Research Funding and Research Productivity," Department of Economics and Statistics Cognetti de Martiis LEI & BRICK - Laboratory of Economics of Innovation "Franco Momigliano", Bureau of Research in Innovation, Complexity and Knowledge, Collegio 201318, University of Turin.
    13. Ben R. Martin, 2016. "R&D policy instruments -- a critical review of what we do and don’t know," Industry and Innovation, Taylor & Francis Journals, vol. 23(2), pages 157-176, February.
    14. Federico Munari & Einar Rasmussen & Laura Toschi & Elisa Villani, 2016. "Determinants of the university technology transfer policy-mix: a cross-national analysis of gap-funding instruments," The Journal of Technology Transfer, Springer, vol. 41(6), pages 1377-1405, December.
    15. Haeussler, Carolin & Colyvas, Jeannette A., 2011. "Breaking the Ivory Tower: Academic Entrepreneurship in the Life Sciences in UK and Germany," Research Policy, Elsevier, vol. 40(1), pages 41-54, February.
    16. Andrew Gelman & Guido Imbens, 2019. "Why High-Order Polynomials Should Not Be Used in Regression Discontinuity Designs," Journal of Business & Economic Statistics, Taylor & Francis Journals, vol. 37(3), pages 447-456, July.
    17. Donald Siegel & Charles Wessner, 2012. "Universities and the success of entrepreneurial ventures: evidence from the small business innovation research program," The Journal of Technology Transfer, Springer, vol. 37(4), pages 404-415, August.
    18. Adam B. Jaffe, 2002. "Building Programme Evaluation into the Design of Public Research-Support Programmes," Oxford Review of Economic Policy, Oxford University Press and Oxford Review of Economic Policy Limited, vol. 18(1), pages 22-34, Spring.
    19. Jacob, Brian A. & Lefgren, Lars, 2011. "The impact of NIH postdoctoral training grants on scientific productivity," Research Policy, Elsevier, vol. 40(6), pages 864-874, July.
    20. Sabrina T. Howell, 2017. "Financing Innovation: Evidence from R&D Grants," American Economic Review, American Economic Association, vol. 107(4), pages 1136-1164, April.
    21. D'Este, P. & Patel, P., 2007. "University-industry linkages in the UK: What are the factors underlying the variety of interactions with industry?," Research Policy, Elsevier, vol. 36(9), pages 1295-1313, November.
    22. Pierre Azoulay & Waverly Ding & Toby Stuart, 2007. "The Determinants of Faculty Patenting Behavior: Demographics or Opportunities?," NBER Chapters, in: Academic Science and Entrepreneurship: Dual Engines of Growth, National Bureau of Economic Research, Inc.
    23. Paula Stephan & Shiferaw Gurmu & Albert Sumell & Grant Black, 2007. "Who'S Patenting In The University? Evidence From The Survey Of Doctorate Recipients," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 16(2), pages 71-99.
    24. Enrico Vanino & Stephen Roper & Bettina Becker, 2020. "Knowledge to Money: Assessing the Business Performance Effects of Publicly Funded R&D Grants," ifo DICE Report, ifo Institute - Leibniz Institute for Economic Research at the University of Munich, vol. 17(04), pages 20-24, January.
    25. Janet Bercovitz & Maryann Feldman, 2008. "Academic Entrepreneurs: Organizational Change at the Individual Level," Organization Science, INFORMS, vol. 19(1), pages 69-89, February.
    26. O'Shea, Rory P. & Allen, Thomas J. & Chevalier, Arnaud & Roche, Frank, 2005. "Entrepreneurial orientation, technology transfer and spinoff performance of U.S. universities," Research Policy, Elsevier, vol. 34(7), pages 994-1009, September.
    27. Lerner, Josh, 1999. "The Government as Venture Capitalist: The Long-Run Impact of the SBIR Program," The Journal of Business, University of Chicago Press, vol. 72(3), pages 285-318, July.
    28. Jordi Molas-Gallart & Pablo D’Este & Oscar Llopis & Ismael Rafols, 2016. "Towards an alternative framework for the evaluation of translational research initiatives," Research Evaluation, Oxford University Press, vol. 25(3), pages 235-243.
    29. Guilhem Bascle, 2008. "Controlling for endogeneity with instrumental variables in strategic management research," Post-Print hal-00576795, HAL.
    30. Munari, Federico & Sobrero, Maurizio & Toschi, Laura, 2018. "The university as a venture capitalist? Gap funding instruments for technology transfer," Technological Forecasting and Social Change, Elsevier, vol. 127(C), pages 70-84.
    31. Guido Imbens & Karthik Kalyanaraman, 2012. "Optimal Bandwidth Choice for the Regression Discontinuity Estimator," Review of Economic Studies, Oxford University Press, vol. 79(3), pages 933-959.
    32. Beckman, Christine M. & Burton, M. Diane & O'Reilly, Charles, 2007. "Early teams: The impact of team demography on VC financing and going public," Journal of Business Venturing, Elsevier, vol. 22(2), pages 147-173, March.
    33. Bozeman, Barry & Youtie, Jan, 2017. "Socio-economic impacts and public value of government-funded research: Lessons from four US National Science Foundation initiatives," Research Policy, Elsevier, vol. 46(8), pages 1387-1398.
    34. Van Looy, Bart & Callaert, Julie & Debackere, Koenraad, 2006. "Publication and patent behavior of academic researchers: Conflicting, reinforcing or merely co-existing?," Research Policy, Elsevier, vol. 35(4), pages 596-608, May.
    35. Lockett, Andy & Wright, Mike, 2005. "Resources, capabilities, risk capital and the creation of university spin-out companies," Research Policy, Elsevier, vol. 34(7), pages 1043-1057, September.
    36. Bozeman, Barry & Gaughan, Monica, 2007. "Impacts of grants and contracts on academic researchers' interactions with industry," Research Policy, Elsevier, vol. 36(5), pages 694-707, June.
    37. Beaudry, Catherine & Allaoui, Sedki, 2012. "Impact of public and private research funding on scientific production: The case of nanotechnology," Research Policy, Elsevier, vol. 41(9), pages 1589-1606.
    38. Levin, Sharon G & Stephan, Paula E, 1991. "Research Productivity over the Life Cycle: Evidence for Academic Scientists," American Economic Review, American Economic Association, vol. 81(1), pages 114-132, March.
    39. Giuri, Paola & Munari, Federico & Scandura, Alessandra & Toschi, Laura, 2019. "The strategic orientation of universities in knowledge transfer activities," Technological Forecasting and Social Change, Elsevier, vol. 138(C), pages 261-278.
    40. Gompers, Paul & Kovner, Anna & Lerner, Josh & Scharfstein, David, 2010. "Performance persistence in entrepreneurship," Journal of Financial Economics, Elsevier, vol. 96(1), pages 18-32, April.
    41. Azoulay, Pierre & Ding, Waverly & Stuart, Toby, 2007. "The determinants of faculty patenting behavior: Demographics or opportunities?," Journal of Economic Behavior & Organization, Elsevier, vol. 63(4), pages 599-623, August.
    42. Hsu, David H., 2007. "Experienced entrepreneurial founders, organizational capital, and venture capital funding," Research Policy, Elsevier, vol. 36(5), pages 722-741, June.
    43. James H. Stock & Motohiro Yogo, 2002. "Testing for Weak Instruments in Linear IV Regression," NBER Technical Working Papers 0284, National Bureau of Economic Research, Inc.
    44. Tartari, Valentina & Salter, Ammon, 2015. "The engagement gap:," Research Policy, Elsevier, vol. 44(6), pages 1176-1191.
    45. Wang, Yanbo & Li, Jizhen & Furman, Jeffrey L., 2017. "Firm performance and state innovation funding: Evidence from China’s innofund program," Research Policy, Elsevier, vol. 46(6), pages 1142-1161.
    46. Lauren Lanahan & Daniel Armanios, 2018. "Does More Certification Always Benefit a Venture?," Organization Science, INFORMS, vol. 29(5), pages 931-947, October.
    47. Debackere, Koenraad & Veugelers, Reinhilde, 2005. "The role of academic technology transfer organizations in improving industry science links," Research Policy, Elsevier, vol. 34(3), pages 321-342, April.
    48. Fengqing Zhang & Erjia Yan & Xin Niu & Yongjun Zhu, 2018. "Joint modeling of the association between NIH funding and its three primary outcomes: patents, publications, and citation impact," Scientometrics, Springer;Akadémiai Kiadó, vol. 117(1), pages 591-602, October.
    49. Perkmann, Markus & Tartari, Valentina & McKelvey, Maureen & Autio, Erkko & Broström, Anders & D’Este, Pablo & Fini, Riccardo & Geuna, Aldo & Grimaldi, Rosa & Hughes, Alan & Krabel, Stefan & Kitson, Mi, 2013. "Academic engagement and commercialisation: A review of the literature on university–industry relations," Research Policy, Elsevier, vol. 42(2), pages 423-442.
    50. Jerry G. Thursby & Marie C. Thursby, 2002. "Who Is Selling the Ivory Tower? Sources of Growth in University Licensing," Management Science, INFORMS, vol. 48(1), pages 90-104, January.
    51. Feldman, Maryann P & Kelley, Maryellen R, 2003. "Leveraging Research and Development: Assessing the Impact of the U.S. Advanced Technology Program," Small Business Economics, Springer, vol. 20(2), pages 153-165, March.
    52. Audretsch, David B. & Bönte, Werner & Mahagaonkar, Prashanth, 2012. "Financial signaling by innovative nascent ventures: The relevance of patents and prototypes," Research Policy, Elsevier, vol. 41(8), pages 1407-1421.
    53. Hottenrott, Hanna & Lawson, Cornelia, 2017. "Fishing for complementarities: Research grants and research productivity," International Journal of Industrial Organization, Elsevier, vol. 51(C), pages 1-38.
    54. Aldridge, T. Taylor & Audretsch, David, 2011. "The Bayh-Dole Act and scientist entrepreneurship," Research Policy, Elsevier, vol. 40(8), pages 1058-1067, October.
    55. Hottenrott, Hanna & Lopes-Bento, Cindy & Veugelers, Reinhilde, 2017. "Direct and cross scheme effects in a research and development," Research Policy, Elsevier, vol. 46(6), pages 1118-1132.
    56. Angrist, Joshua D, 2001. "Estimations of Limited Dependent Variable Models with Dummy Endogenous Regressors: Simple Strategies for Empirical Practice: Reply," Journal of Business & Economic Statistics, American Statistical Association, vol. 19(1), pages 27-28, January.
    57. Scott J. Wallsten, 2000. "The Effects of Government-Industry R&D Programs on Private R&D: The Case of the Small Business Innovation Research Program," RAND Journal of Economics, The RAND Corporation, vol. 31(1), pages 82-100, Spring.
    58. Anna Kochenkova & Rosa Grimaldi & Federico Munari, 2016. "Public policy measures in support of knowledge transfer activities: a review of academic literature," The Journal of Technology Transfer, Springer, vol. 41(3), pages 407-429, June.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Battaglia, Daniele & Paolucci, Emilio & Ughetto, Elisa, 2021. "Opening the black box of university Proof-of-Concept programs: Project and team-based determinants of research commercialization outcomes," Technovation, Elsevier, vol. 108(C).
    2. Qianqian Jin & Hongshu Chen & Ximeng Wang & Tingting Ma & Fei Xiong, 2022. "Exploring funding patterns with word embedding-enhanced organization–topic networks: a case study on big data," Scientometrics, Springer;Akadémiai Kiadó, vol. 127(9), pages 5415-5440, September.
    3. Manoj Kumar Verma & Daud Khan & Mayank Yuvaraj, 2023. "Scientometric assessment of funded scientometrics and bibliometrics research (2011–2021)," Scientometrics, Springer;Akadémiai Kiadó, vol. 128(8), pages 4305-4320, August.
    4. Dzieżyc, Maciej & Kazienko, Przemysław, 2022. "Effectiveness of research grants funded by European Research Council and Polish National Science Centre," Journal of Informetrics, Elsevier, vol. 16(1).
    5. Trabelsi Ramzi & Kallal Rahim & Maher Skhiri, 2023. "Scientific Knowledge Valorization in the Public R&D Sector: a Survey and a PLS-SEM Approach," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 14(1), pages 226-254, March.
    6. Alänge, Sverker & Steiber, Annika & Corvello, Vincenzo, 2022. "Evaluating corporate-startup collaboration: A government perspective," Evaluation and Program Planning, Elsevier, vol. 95(C).
    7. Battaglia, Daniele & Paolucci, Emilio & Ughetto, Elisa, 2021. "The role of Proof-of-Concept programs in facilitating the commercialization of research-based inventions," Research Policy, Elsevier, vol. 50(6).
    8. Seeber, Marco & Alon, Ilan & Pina, David G. & Piro, Fredrik Niclas & Seeber, Michele, 2022. "Predictors of applying for and winning an ERC Proof-of-Concept grant: An automated machine learning model," Technological Forecasting and Social Change, Elsevier, vol. 184(C).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Seeber, Marco & Alon, Ilan & Pina, David G. & Piro, Fredrik Niclas & Seeber, Michele, 2022. "Predictors of applying for and winning an ERC Proof-of-Concept grant: An automated machine learning model," Technological Forecasting and Social Change, Elsevier, vol. 184(C).
    2. Battaglia, Daniele & Paolucci, Emilio & Ughetto, Elisa, 2021. "The role of Proof-of-Concept programs in facilitating the commercialization of research-based inventions," Research Policy, Elsevier, vol. 50(6).
    3. Christopher S. Hayter & Andrew J. Nelson & Stephanie Zayed & Alan C. O’Connor, 2018. "Conceptualizing academic entrepreneurship ecosystems: a review, analysis and extension of the literature," The Journal of Technology Transfer, Springer, vol. 43(4), pages 1039-1082, August.
    4. Abreu, Maria & Grinevich, Vadim, 2013. "The nature of academic entrepreneurship in the UK: Widening the focus on entrepreneurial activities," Research Policy, Elsevier, vol. 42(2), pages 408-422.
    5. Christian Sandström & Karl Wennberg & Martin W. Wallin & Yulia Zherlygina, 2018. "Public policy for academic entrepreneurship initiatives: a review and critical discussion," The Journal of Technology Transfer, Springer, vol. 43(5), pages 1232-1256, October.
    6. Munari, Federico & Sobrero, Maurizio & Toschi, Laura, 2018. "The university as a venture capitalist? Gap funding instruments for technology transfer," Technological Forecasting and Social Change, Elsevier, vol. 127(C), pages 70-84.
    7. Perkmann, Markus & Tartari, Valentina & McKelvey, Maureen & Autio, Erkko & Broström, Anders & D’Este, Pablo & Fini, Riccardo & Geuna, Aldo & Grimaldi, Rosa & Hughes, Alan & Krabel, Stefan & Kitson, Mi, 2013. "Academic engagement and commercialisation: A review of the literature on university–industry relations," Research Policy, Elsevier, vol. 42(2), pages 423-442.
    8. Larsen, Maria Theresa, 2011. "The implications of academic enterprise for public science: An overview of the empirical evidence," Research Policy, Elsevier, vol. 40(1), pages 6-19, February.
    9. Paola Giuri & Rosa Grimaldi & Anna Kochenkova & Federico Munari & Laura Toschi, 2020. "The effects of university-level policies on women’s participation in academic patenting in Italy," The Journal of Technology Transfer, Springer, vol. 45(1), pages 122-150, February.
    10. Aydemir, Nisa Yazici & Huang, Wan-Ling & Welch, Eric W., 2022. "Late-stage academic entrepreneurship: Explaining why academic scientists collaborate with industry to commercialize their patents," Technological Forecasting and Social Change, Elsevier, vol. 176(C).
    11. Perkmann, Markus & Salandra, Rossella & Tartari, Valentina & McKelvey, Maureen & Hughes, Alan, 2021. "Academic engagement: A review of the literature 2011-2019," Research Policy, Elsevier, vol. 50(1).
    12. Ani Gerbin & Mateja Drnovsek, 2016. "Determinants and public policy implications of academic-industry knowledge transfer in life sciences: a review and a conceptual framework," The Journal of Technology Transfer, Springer, vol. 41(5), pages 979-1076, October.
    13. Battaglia, Daniele & Paolucci, Emilio & Ughetto, Elisa, 2021. "Opening the black box of university Proof-of-Concept programs: Project and team-based determinants of research commercialization outcomes," Technovation, Elsevier, vol. 108(C).
    14. Berna Beyhan & M. Teoman Pamukçu & Erkan Erdil, 2011. "Individual and Organizational Aspects of University-Industry Relations in Nanotechnology: The Turkish Case," STPS Working Papers 1106, STPS - Science and Technology Policy Studies Center, Middle East Technical University, revised Jun 2011.
    15. Victoria Galan-Muros & Todd Davey, 2019. "The UBC ecosystem: putting together a comprehensive framework for university-business cooperation," The Journal of Technology Transfer, Springer, vol. 44(4), pages 1311-1346, August.
    16. Lee, Kyootai & Jung, Hyun Ju, 2021. "Does TTO capability matter in commercializing university technology? Evidence from longitudinal data in South Korea," Research Policy, Elsevier, vol. 50(1).
    17. Tartari, Valentina & Salter, Ammon, 2015. "The engagement gap:," Research Policy, Elsevier, vol. 44(6), pages 1176-1191.
    18. Wang, Yanbo & Li, Jizhen & Furman, Jeffrey L., 2017. "Firm performance and state innovation funding: Evidence from China’s innofund program," Research Policy, Elsevier, vol. 46(6), pages 1142-1161.
    19. Tartari, Valentina & Perkmann, Markus & Salter, Ammon, 2014. "In good company: The influence of peers on industry engagement by academic scientists," Research Policy, Elsevier, vol. 43(7), pages 1189-1203.
    20. Zhao, Bo & Ziedonis, Rosemarie, 2020. "State governments as financiers of technology startups: Evidence from Michigan's R&D loan program," Research Policy, Elsevier, vol. 49(4).

    More about this item

    Keywords

    science valorisation; impact; technology transfer; proof-of-concept; public funding; grants;
    All these keywords.

    JEL classification:

    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • G38 - Financial Economics - - Corporate Finance and Governance - - - Government Policy and Regulation
    • L52 - Industrial Organization - - Regulation and Industrial Policy - - - Industrial Policy; Sectoral Planning Methods
    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital
    • O38 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Government Policy

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:respol:v:50:y:2021:i:6:s0048733321000159. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/respol .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.