1. Sattinger, Michael, 1984. "Value of an Additional Firm in Monopolistic Competition," Review of Economic Studies, Blackwell Publishing, vol. 51(2), pages 321-32, April. [Downloadable!] (restricted)
2. Franke, Nikolaus & Hippel, Eric von, 2003. "Satisfying heterogeneous user needs via innovation toolkits: the case of Apache security software," Research Policy, Elsevier, vol. 32(7), pages 1199-1215, July. [Downloadable!] (restricted)
3. Hart, Oliver D, 1985. "Monopolistic Competition in the Spirit of Chamberlin: Special Results," Economic Journal, Royal Economic Society, vol. 95(380), pages 889-908, December. [Downloadable!] (restricted)
4. Rothwell, R. & Freeman, C. & Horsley, A. & Jervis, V. T. P. & Robertson, A. B. & Townsend, J., 1993. "SAPPHO updated -- project SAPPHO phase II," Research Policy, Elsevier, vol. 22(2), pages 110-110, April. [Downloadable!] (restricted)
5. Nancy Gallini & Suzanne Scotchmer, 2001. "Intellectual Property: When Is It the Best Incentive System?," Department of Economics, Working Paper Series 1010, Department of Economics, Institute for Business and Economic Research, UC Berkeley. [Downloadable!]
6. Eaton, B Curtis & Schmitt, Nicolas, 1994. "Flexible Manufacturing and Market Structure," American Economic Review, American Economic Association, vol. 84(4), pages 875-88, September. [Downloadable!] (restricted)
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   • Curtis Eaton, B. & Schmitt, N., 1991. "Flexible Manufacturing and Market Structure," Papers 1991-02, Tasmania - Department of Economics.
7. Ogawa, Susumu, 1964-, 1997. "Does sticky information affect the locus of innovation? : evidence from the Japanese convenience-store industry," Working papers WP 3984-97., Massachusetts Institute of Technology (MIT), Sloan School of Management. [Downloadable!]
8. Saint-Paul, Gilles, 2001. "Growth Effects of Non-Proprietary Innovation," CEPR Discussion Papers 3069, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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   • Gilles Saint-Paul, 2002. "Growth Effects of non Proprietary Innovation," CESifo Working Paper Series CESifo Working Paper No. , CESifo Group Munich. [Downloadable!]
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   • Boldrin, Michele & Levine, David, 2002. "The Case Against Intellectual Property," CEPR Discussion Papers 3273, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
   • Michele Boldrin & David Levine, 2002. "The Case Against Intellectual Property," American Economic Review, American Economic Association, vol. 92(2), pages 209-212, May. [Downloadable!]
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    • Nancy Gallini & Suzanne Scotchmer, 2002. "Intellectual Property: When Is It the Best Incentive System?," Law and Economics 0201001, EconWPA. [Downloadable!]
    • Nancy Gallini & Suzanne Scotchmer, 2002. "Intellectual Property: When Is It the Best Incentive System?," NBER Chapters, in: Innovation Policy and the Economy, Volume 2, pages 51-78 National Bureau of Economic Research, Inc. [Downloadable!]
11. Spence, Michael, 1976. "Product Selection, Fixed Costs, and Monopolistic Competition," Review of Economic Studies, Blackwell Publishing, vol. 43(2), pages 217-35, June. [Downloadable!] (restricted)
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13. Kenneth Arrow, 1962. "Economic Welfare and the Allocation of Resources for Invention," NBER Chapters, in: The Rate and Direction of Inventive Activity: Economic and Social Factors, pages 609-626 National Bureau of Economic Research, Inc. [Downloadable!]
14. Timothy F. Bresnahan & Shane Greenstein, 1994. "The Competitive Crash in Large-Scale Commercial Computing," NBER Working Papers 4901, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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16. Curtis Eaton, B. & Lipsey, Richard G., 1989. "Product differentiation," Handbook of Industrial Organization, in: R. Schmalensee & R. Willig (ed.), Handbook of Industrial Organization, edition 1, volume 1, chapter 12, pages 723-768 Elsevier. [Downloadable!] (restricted)
17. Spence, Michael, 1976. "Product Differentiation and Welfare," American Economic Review, American Economic Association, vol. 66(2), pages 407-14, May. [Downloadable!] (restricted)
18. Dixit, Avinash K & Stiglitz, Joseph E, 1977. "Monopolistic Competition and Optimum Product Diversity," American Economic Review, American Economic Association, vol. 67(3), pages 297-308, June. [Downloadable!] (restricted)
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    • Dixit, Avinash K & Stiglitz, Joseph E, 1975. "Monopolistic Competition and Optimum Product Diversity," The Warwick Economics Research Paper Series (TWERPS) 64, University of Warwick, Department of Economics. [Downloadable!]
19. Harhoff, Dietmar & Henkel, Joachim & von Hippel, Eric, 2003. "Profiting from voluntary information spillovers: how users benefit by freely revealing their innovations," Research Policy, Elsevier, vol. 32(10), pages 1753-1769, December. [Downloadable!] (restricted)
20. Rothwell, R. & Freeman, C. & Horlsey, A. & Jervis, V. T. P. & Robertson, A. B. & Townsend, J., 1974. "SAPPHO updated - project SAPPHO phase II," Research Policy, Elsevier, vol. 3(3), pages 258-291, November. [Downloadable!] (restricted)
21. Anderson, Simon Peter & de Palma, Andre & Thisse, Jacques-Francois, 1988. "A Representative Consumer Theory of the Logit Model," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 29(3), pages 461-66, August. [Downloadable!] (restricted)
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    • ANDERSON, S. & de PALMA, A. & THISSE, J.-F., 1986. "A representative consumer theory of the logit model," CORE Discussion Papers 1986043, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
22. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth through Creative Destruction," Econometrica, Econometric Society, vol. 60(2), pages 323-51, March. [Downloadable!] (restricted)
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    • Aghion, P. & Howitt, P., 1990. "A Model Of Growth Through Creative Destruction," DELTA Working Papers 90-12, DELTA (Ecole normale supérieure).
    • Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," UWO Department of Economics Working Papers 8904, University of Western Ontario, Department of Economics.
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    • Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," Working papers 527, Massachusetts Institute of Technology (MIT), Department of Economics.
23. Benkler, Yochai, 2002. "Intellectual property and the organization of information production," International Review of Law and Economics, Elsevier, vol. 22(1), pages 81-107, July. [Downloadable!] (restricted)
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28. Mansfield, Edwin & Wagner, Samuel, 1975. "Organizational and Strategic Factors Associated with Probabilities of Success in Industrial R & D," Journal of Business, University of Chicago Press, vol. 48(2), pages 179-98, April. [Downloadable!] (restricted)

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1. Pier Patrucco, 2008. "The economics of collective knowledge and technological communication," The Journal of Technology Transfer, Springer, vol. 33(6), pages 579-599, December. [Downloadable!] (restricted)
2. Lars Bo Jeppesen, . "Profiting from innovative user communities: How firms organize the production of user modifications in the computer games industry," IVS/CBS Working Papers 2004-03, Department of Industrial Economics and Strategy, Copenhagen Business School. [Downloadable!]
3. Eric Brousseau & Thierry Penard, 2007. "The Economics of Digital Business Models: A Framework for Analyzing the Economics of Platforms," Review of Network Economics, Concept Economics, vol. 6(2), pages 81-114, June. [Downloadable!]
4. Stephen M. Maurer & Suzanne Scotchmer, 2006. "Open Source Software: The New Intellectual Property Paradigm," NBER Working Papers 12148, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
5. Sánchez González, Gloria & González Álvarez, Nuria, 2007. "Desarrollo de innovaciones cooperando con clientes: ¿Cuándo es conveniente?," Documentos de Trabajo "Nuevas Tendencias en Dirección de Empresas". Working Papers "New Trends on Business Administration". 2007-18, Interuniversitary Doctorate Program "New Trends on Business Administration", Universities of Valladolid, Burgos and Salamanca (Spain). Programa de Doctorado Interuniversitario "Nuevas Tendencias en Di. [Downloadable!]