IDEAS home Printed from https://ideas.repec.org/a/kap/jtecht/v40y2015i2p273-292.html
   My bibliography  Save this article

Academic entrepreneurship: Which inventors do technology licensing officers prefer for spinoffs?

Author

Listed:
  • Scott Shane
  • Sharon Dolmans
  • Joseph Jankowski
  • Isabelle Reymen
  • A. Romme

Abstract

Technology licensing officers play an important role in the creation of university spinoffs. Anecdotal data suggests that licensing officers make use of the representativeness heuristic when deciding which inventors’ technologies should (not) be commercialized through the founding of new companies. In this context, use of the representativeness heuristic implies that licensing officers favor for spinoff creation the inventions of academics that “fit” the profile of a typical inventor-entrepreneur. To examine this possibility, we conduct a randomized experiment with more than 200 technology licensing officers at U.S. universities and find evidence consistent with the use of the representativeness heuristic. Copyright Springer Science+Business Media New York 2015

Suggested Citation

  • Scott Shane & Sharon Dolmans & Joseph Jankowski & Isabelle Reymen & A. Romme, 2015. "Academic entrepreneurship: Which inventors do technology licensing officers prefer for spinoffs?," The Journal of Technology Transfer, Springer, vol. 40(2), pages 273-292, April.
    • Handle: RePEc:kap:jtecht:v:40:y:2015:i:2:p:273-292
    DOI: 10.1007/s10961-014-9365-8
    as

    Download full text from publisher

    File URL: http://hdl.handle.net/10.1007/s10961-014-9365-8
    Download Restriction: Access to full text is restricted to subscribers.
    File URL: https://libkey.io/10.1007/s10961-014-9365-8?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. Vohora, Ajay & Wright, Mike & Lockett, Andy, 2004. "Critical junctures in the development of university high-tech spinout companies," Research Policy, Elsevier, vol. 33(1), pages 147-175, January.
    2. Einar Rasmussen & Simon Mosey & Mike Wright, 2011. "The Evolution of Entrepreneurial Competencies: A Longitudinal Study of University Spin‐Off Venture Emergence," Journal of Management Studies, Wiley Blackwell, vol. 48, pages 1314-1345, September.
    3. Wesley David Sine & Scott Shane & Dante Di Gregorio, 2003. "The Halo Effect and Technology Licensing: The Influence of Institutional Prestige on the Licensing of University Inventions," Management Science, INFORMS, vol. 49(4), pages 478-496, April.
    4. 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.
    5. Jennifer Hunt, 2011. "Which Immigrants Are Most Innovative and Entrepreneurial? Distinctions by Entry Visa," Journal of Labor Economics, University of Chicago Press, vol. 29(3), pages 417-457.
    6. Scott Shane, 2002. "Selling University Technology: Patterns from MIT," Management Science, INFORMS, vol. 48(1), pages 122-137, January.
    7. Siegel, Donald S. & Waldman, David & Link, Albert, 2003. "Assessing the impact of organizational practices on the relative productivity of university technology transfer offices: an exploratory study," Research Policy, Elsevier, vol. 32(1), pages 27-48, January.
    8. Franklin, Stephen J & Wright, Mike & Lockett, Andy, 2001. "Academic and Surrogate Entrepreneurs in University Spin-Out Companies," The Journal of Technology Transfer, Springer, vol. 26(1-2), pages 127-141, January.
    9. 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.
    10. Stefan Krabel & Donald Siegel & Viktor Slavtchev, 2012. "The internationalization of science and its influence on academic entrepreneurship," The Journal of Technology Transfer, Springer, vol. 37(2), pages 192-212, April.
    11. 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.
    12. Duchesneau, Donald A. & Gartner, William B., 1990. "A profile of new venture success and failure in an emerging industry," Journal of Business Venturing, Elsevier, vol. 5(5), pages 297-312, September.
    13. Richard A. Jensen & Jerry G. Thursby & Marie C. Thursby, 2003. "The Disclosure and Licensing of University Inventions," NBER Working Papers 9734, National Bureau of Economic Research, Inc.
    14. Fligstein, Neil, 2001. "Social Skill and the Theory of Fields," Center for Culture, Organizations and Politics, Working Paper Series qt26m187b1, Center for Culture, Organizations and Politics of theInstitute for Research on Labor and Employment, UC Berkeley.
    15. Owen-Smith, Jason & Powell, Walter W., 2003. "The expanding role of university patenting in the life sciences: assessing the importance of experience and connectivity," Research Policy, Elsevier, vol. 32(9), pages 1695-1711, October.
    16. Clarysse, Bart & Wright, Mike & Lockett, Andy & Van de Velde, Els & Vohora, Ajay, 2005. "Spinning out new ventures: a typology of incubation strategies from European research institutions," Journal of Business Venturing, Elsevier, vol. 20(2), pages 183-216, March.
    17. Link, Albert N. & Siegel, Donald S., 2005. "University-based technology initiatives: Quantitative and qualitative evidence," Research Policy, Elsevier, vol. 34(3), pages 253-257, April.
    18. Scott Shane, 2001. "Technology Regimes and New Firm Formation," Management Science, INFORMS, vol. 47(9), pages 1173-1190, September.
    19. Owen-Smith, Jason & Powell, Walter W, 2001. "To Patent or Not: Faculty Decisions and Institutional Success at Technology Transfer," The Journal of Technology Transfer, Springer, vol. 26(1-2), pages 99-114, January.
    20. Åstebro, Thomas & Bazzazian, Navid & Braguinsky, Serguey, 2012. "Startups by recent university graduates and their faculty: Implications for university entrepreneurship policy," Research Policy, Elsevier, vol. 41(4), pages 663-677.
    21. Emmanuel Dechenaux & Brent Goldfarb & Scott Shane & Marie Thursby, 2008. "Appropriability and Commercialization: Evidence from MIT Inventions," Management Science, INFORMS, vol. 54(5), pages 893-906, May.
    22. Federico Munari & Laura Toschi, 2011. "Do venture capitalists have a bias against investment in academic spin-offs? Evidence from the micro- and nanotechnology sector in the UK," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 20(2), pages 397-432, April.
    23. Scott Shane & Daniel Cable, 2002. "Network Ties, Reputation, and the Financing of New Ventures," Management Science, INFORMS, vol. 48(3), pages 364-381, March.
    24. Walter, Achim & Auer, Michael & Ritter, Thomas, 2006. "The impact of network capabilities and entrepreneurial orientation on university spin-off performance," Journal of Business Venturing, Elsevier, vol. 21(4), pages 541-567, July.
    25. Gideon D. Markman & Donald S. Siegel & Mike Wright, 2008. "Research and Technology Commercialization," Journal of Management Studies, Wiley Blackwell, vol. 45(8), pages 1401-1423, December.
    26. Donald S. Siegel & Reinhilde Veugelers & Mike Wright, 2007. "Technology transfer offices and commercialization of university intellectual property: performance and policy implications," Oxford Review of Economic Policy, Oxford University Press and Oxford Review of Economic Policy Limited, vol. 23(4), pages 640-660, Winter.
    27. Philippe Mustar, 1997. "How French academics create hi-tech companies: The conditions for success or failure," Science and Public Policy, Oxford University Press, vol. 24(1), pages 37-43, February.
    28. Di Gregorio, Dante & Shane, Scott, 2003. "Why do some universities generate more start-ups than others?," Research Policy, Elsevier, vol. 32(2), pages 209-227, February.
    29. Jensen, Richard A. & Thursby, Jerry G. & Thursby, Marie C., 2003. "Disclosure and licensing of University inventions: 'The best we can do with the s**t we get to work with'," International Journal of Industrial Organization, Elsevier, vol. 21(9), pages 1271-1300, November.
    30. 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.
    31. AnnaLee Saxenian, 2002. "Silicon Valley’s New Immigrant High-Growth Entrepreneurs," Economic Development Quarterly, , vol. 16(1), pages 20-31, February.
    32. Stuart, Robert & Abetti, Pier A., 1987. "Start-up ventures: Towards the prediction of initial success," Journal of Business Venturing, Elsevier, vol. 2(3), pages 215-230.
    33. 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.
    34. Baron, Robert A. & Markman, Gideon D., 2003. "Beyond social capital: the role of entrepreneurs' social competence in their financial success," Journal of Business Venturing, Elsevier, vol. 18(1), pages 41-60, January.
    35. Thursby, Jerry G & Jensen, Richard & Thursby, Marie C, 2001. "Objectives, Characteristics and Outcomes of University Licensing: A Survey of Major U.S. Universities," The Journal of Technology Transfer, Springer, vol. 26(1-2), pages 59-72, January.
    36. Albert N. Link & Donald S. Siegel & Barry Bozeman, 2007. "An empirical analysis of the propensity of academics to engage in informal university technology transfer ," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 16(4), pages 641-655, August.
    37. Kjersten Whittington & Laurel Smith-Doerr, 2005. "Gender and Commercial Science: Women’s Patenting in the Life Sciences," The Journal of Technology Transfer, Springer, vol. 30(4), pages 355-370, October.
    38. Krabel, Stefan & Mueller, Pamela, 2009. "What drives scientists to start their own company?: An empirical investigation of Max Planck Society scientists," Research Policy, Elsevier, vol. 38(6), pages 947-956, July.
    39. Jerry Thursby & Marie Thursby, 2005. "Gender Patterns of Research and Licensing Activity of Science and Engineering Faculty," The Journal of Technology Transfer, Springer, vol. 30(4), pages 343-353, October.
    40. Jerry G. Thursby & Marie C. Thursby, 2007. "University licensing," Oxford Review of Economic Policy, Oxford University Press and Oxford Review of Economic Policy Limited, vol. 23(4), pages 620-639, Winter.
    41. Scott Shane, 2001. "Technological Opportunities and New Firm Creation," Management Science, INFORMS, vol. 47(2), pages 205-220, February.
    42. Philippe Mustar & Mike Wright & Bart Clarysse, 2008. "University spin-off firms: Lessons from ten years of experience in Europe," Science and Public Policy, Oxford University Press, vol. 35(2), pages 67-80, March.
    43. Scott Shane, 2000. "Prior Knowledge and the Discovery of Entrepreneurial Opportunities," Organization Science, INFORMS, vol. 11(4), pages 448-469, August.
    44. Rory O’Shea & Harveen Chugh & Thomas Allen, 2008. "Determinants and consequences of university spinoff activity: a conceptual framework," The Journal of Technology Transfer, Springer, vol. 33(6), pages 653-666, December.
    45. Simon Mosey & Mike Wright, 2007. "From Human Capital to Social Capital: A Longitudinal Study of Technology–Based Academic Entrepreneurs," Entrepreneurship Theory and Practice, , vol. 31(6), pages 909-935, November.
    46. Landry, Rejean & Amara, Nabil & Rherrad, Imad, 2006. "Why are some university researchers more likely to create spin-offs than others? Evidence from Canadian universities," Research Policy, Elsevier, vol. 35(10), pages 1599-1615, December.
    47. Grandi, Alessandro & Grimaldi, Rosa, 2005. "Academics' organizational characteristics and the generation of successful business ideas," Journal of Business Venturing, Elsevier, vol. 20(6), pages 821-845, November.
    48. Grandi, Alessandro & Grimaldi, Rosa, 2003. "Exploring the Networking Characteristics of New Venture Founding Teams," Small Business Economics, Springer, vol. 21(4), pages 329-341, December.
    49. Scott Shane & Rakesh Khurana, 2003. "Bringing individuals back in: the effects of career experience on new firm founding," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 12(3), pages 519-543, June.
    50. Nicos Nicolaou & Sue Birley, 2003. "Social Networks in Organizational Emergence: The University Spinout Phenomenon," Management Science, INFORMS, vol. 49(12), pages 1702-1725, December.
    51. Marie Thursby & Richard Jensen, 2001. "Proofs and Prototypes for Sale: The Licensing of University Inventions," American Economic Review, American Economic Association, vol. 91(1), pages 240-259, March.
    52. Paula Stephan & Asmaa El-Ganainy, 2007. "The entrepreneurial puzzle: explaining the gender gap," The Journal of Technology Transfer, Springer, vol. 32(5), pages 475-487, October.
    53. Fini, Riccardo & Lacetera, Nicola & Shane, Scott, 2010. "Inside or outside the IP system? Business creation in academia," Research Policy, Elsevier, vol. 39(8), pages 1060-1069, October.
    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. 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.
    2. Alice Civera & Michele Meoli, 2023. "Empowering female entrepreneurs through university affiliation: evidence from Italian academic spinoffs," Small Business Economics, Springer, vol. 61(3), pages 1337-1355, October.
    3. Freel, Mark & Persaud, Ajax & Chamberlin, Tyler, 2019. "Faculty ideals and universities' third mission," Technological Forecasting and Social Change, Elsevier, vol. 147(C), pages 10-21.
    4. Claire Champenois & Henry Etzkowitz, 2018. "From boundary line to boundary space: The creation of hybrid organizations as a Triple Helix micro-foundation," Post-Print hal-01988410, HAL.
    5. Steven Bednar & Dora Gicheva & Albert N. Link, 2021. "Innovative activity and gender dynamics," Small Business Economics, Springer, vol. 56(4), pages 1591-1599, April.
    6. Francisco Javier Miranda & Antonio Chamorro & Sergio Rubio, 2018. "Re-thinking university spin-off: a critical literature review and a research agenda," The Journal of Technology Transfer, Springer, vol. 43(4), pages 1007-1038, August.
    7. Lauto, Giancarlo & Salvador, Elisa & Visintin, Francesca, 2022. "For what they are, not for what they bring: The signaling value of gender for financial resource acquisition in academic spin-offs," Research Policy, Elsevier, vol. 51(7).
    8. Eric Joseph van Holm & Heyjie Jung & Eric W. Welch, 2021. "The impacts of foreignness and cultural distance on commercialization of patents," The Journal of Technology Transfer, Springer, vol. 46(1), pages 29-61, February.
    9. S. A. M. Dolmans & B. Walrave & S. Read & N. Stijn, 2022. "Knowledge transfer to industry: how academic researchers learn to become boundary spanners during academic engagement," The Journal of Technology Transfer, Springer, vol. 47(5), pages 1422-1450, October.
    10. Erdős, Katalin, 2019. "Egyetemi vállalkozások Magyarországon - újragondolva? [University spin-off in Hungary - Rethought?]," Közgazdasági Szemle (Economic Review - monthly of the Hungarian Academy of Sciences), Közgazdasági Szemle Alapítvány (Economic Review Foundation), vol. 0(3), pages 305-329.
    11. Champenois, Claire & Etzkowitz, Henry, 2018. "From boundary line to boundary space: The creation of hybrid organizations as a Triple Helix micro-foundation," Technovation, Elsevier, vol. 76, pages 28-39.
    12. Annelore Huyghe & Mirjam Knockaert & Evila Piva & Mike Wright, 2016. "Are researchers deliberately bypassing the technology transfer office? An analysis of TTO awareness," Small Business Economics, Springer, vol. 47(3), pages 589-607, October.
    13. Patient Rambe & Takawira Munyaradzi Ndofirepi, 2017. "Gender Differences in the Perceptions of Entrepreneurship Hindrances: A Case of Vocational Education Students in Zimbabwe," Journal of Economics and Behavioral Studies, AMH International, vol. 8(6), pages 94-113.
    14. 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).
    15. Halilem, Norrin & Amara, Nabil & Olmos-Peñuela, Julia & Mohiuddin, Muhammad, 2017. "“To Own, or not to Own?” A multilevel analysis of intellectual property right policies' on academic entrepreneurship," Research Policy, Elsevier, vol. 46(8), pages 1479-1489.

    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. 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.
    2. 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.
    3. 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.
    4. 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.
    5. 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.
    6. Jing Xia & Wei Liu & Sang-Bing Tsai & Guodong Li & Chien-Chi Chu & Kai Wang, 2018. "A System Dynamics Framework for Academic Entrepreneurship," Sustainability, MDPI, vol. 10(7), pages 1-25, July.
    7. Krabel, Stefan & Mueller, Pamela, 2009. "What drives scientists to start their own company?: An empirical investigation of Max Planck Society scientists," Research Policy, Elsevier, vol. 38(6), pages 947-956, July.
    8. Rasmussen, Einar & Borch, Odd Jarl, 2010. "University capabilities in facilitating entrepreneurship: A longitudinal study of spin-off ventures at mid-range universities," Research Policy, Elsevier, vol. 39(5), pages 602-612, June.
    9. Good, Matthew & Knockaert, Mirjam & Soppe, Birthe & Wright, Mike, 2019. "The technology transfer ecosystem in academia. An organizational design perspective," Technovation, Elsevier, vol. 82, pages 35-50.
    10. Marius Tuft Mathisen & Einar Rasmussen, 2019. "The development, growth, and performance of university spin-offs: a critical review," The Journal of Technology Transfer, Springer, vol. 44(6), pages 1891-1938, December.
    11. Einar Rasmussen & Mike Wright, 2015. "How can universities facilitate academic spin-offs? An entrepreneurial competency perspective," The Journal of Technology Transfer, Springer, vol. 40(5), pages 782-799, October.
    12. Foray, Dominique & Lissoni, Francesco, 2010. "University Research and Public–Private Interaction," Handbook of the Economics of Innovation, in: Bronwyn H. Hall & Nathan Rosenberg (ed.), Handbook of the Economics of Innovation, edition 1, volume 1, chapter 0, pages 275-314, Elsevier.
    13. Walter, Sascha G. & Schmidt, Arne & Walter, Achim, 2016. "Patenting rationales of academic entrepreneurs in weak and strong organizational regimes," Research Policy, Elsevier, vol. 45(2), pages 533-545.
    14. Mauro Sciarelli & Giovanni Catello Landi & Lorenzo Turriziani & Mario Tani, 2021. "Academic entrepreneurship: founding and governance determinants in university spin-off ventures," The Journal of Technology Transfer, Springer, vol. 46(4), pages 1083-1107, August.
    15. Maria Abreu & Vadim Grinevich, 2014. "Academic Entrepreneurship in the Creative Arts," Environment and Planning C, , vol. 32(3), pages 451-470, June.
    16. Bradley, Samantha R. & Hayter, Christopher S. & Link, Albert N., 2013. "Models and Methods of University Technology Transfer," UNCG Economics Working Papers 13-10, University of North Carolina at Greensboro, Department of Economics.
    17. repec:wip:wpaper:4 is not listed on IDEAS
    18. Aldridge, T. Taylor & Audretsch, David, 2011. "The Bayh-Dole Act and scientist entrepreneurship," Research Policy, Elsevier, vol. 40(8), pages 1058-1067, October.
    19. Alan Hughes & Michael Kitson, 2012. "Pathways to Impact and the Strategic Role of Universities," Working Papers wp435, Centre for Business Research, University of Cambridge.
    20. Pluvia Zuniga, 2011. "The State of Patenting at Research Institutions in Developing Countries: Policy Approaches and Practices," WIPO Economic Research Working Papers 04, World Intellectual Property Organization - Economics and Statistics Division, revised Dec 2011.
    21. Charlotta Dahlborg & Danielle Lewensohn & Rickard Danell & Carl Johan Sundberg, 2017. "To invent and let others innovate: a framework of academic patent transfer modes," The Journal of Technology Transfer, Springer, vol. 42(3), pages 538-563, June.

    More about this item

    Keywords

    University spinoffs; Entrepreneurship; Technology licensing offices; University inventions; Technology commercialization; L26; M13; O31; O32;
    All these keywords.

    JEL classification:

    • L26 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Entrepreneurship
    • M13 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Business Administration - - - New Firms; Startups
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O32 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Management of Technological Innovation and R&D

    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:kap:jtecht:v:40:y:2015:i:2:p:273-292. 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: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    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.