1. Tor Jakob Klette & Samuel Kortum, 2004. "Innovating Firms and Aggregate Innovation," Journal of Political Economy, University of Chicago Press, vol. 112(5), pages 986-1018, October.
   Other versions:
   • Klette, Tor Jakob & Kortum, Samuel S, 2002. "Innovating Firms and Aggregate Innovation," CEPR Discussion Papers 3248, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
   • Tor Jakob Klette & Samuel Kortum, 2002. "Innovating Firms and Aggregate Innovation," NBER Working Papers 8819, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
   • Klette, Tor Jakob & Kortum, Samuel, 2002. "Innovating Firms and Aggregate Innovation," Memorandum 02/2002, Oslo University, Department of Economics. [Downloadable!]
   • Jakob Klette & Samuel Kortum, 2002. "Innovating firms and aggregate innovation," Staff Report 300, Federal Reserve Bank of Minneapolis. [Downloadable!]
2. Audretsch, David B & Feldman, Maryann P, 1996. "R&D Spillovers and the Geography of Innovation and Production," American Economic Review, American Economic Association, vol. 86(3), pages 630-40, June. [Downloadable!] (restricted)
3. Feldman, Maryann P. & Audretsch, David B., 1999. "Innovation in cities:: Science-based diversity, specialization and localized competition," European Economic Review, Elsevier, vol. 43(2), pages 409-429, February. [Downloadable!] (restricted)
   Other versions:
   • Audretsch, David B & Feldman, Maryann P, 1998. "Innovation in Cities: Science-Based Diversity, Specialization and Localized Competition," CEPR Discussion Papers 1980, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
4. Paola Criscuolo & Rajneesh Narula, 2005. "Using Multi-hub Structures for international R&D Organizational Inertia and the Challenges of Implementation," DRUID Working Papers 05-13, DRUID, Copenhagen Business School, Department of Industrial Economics and Strategy/Aalborg University, Department of Business Studies. [Downloadable!]
   Other versions:
   • Criscuolo,Paola & Narula,Rajneesh, 2005. "Using multi-hub structures for international R&D: Organizational inertia and the challenges of implementation," Research Memoranda 025, Maastricht : MERIT, Maastricht Economic Research Institute on Innovation and Technology. [Downloadable!]
5. Cohen, Wesley M & Klepper, Steven, 1996. "A Reprise of Size and R&D," Economic Journal, Royal Economic Society, vol. 106(437), pages 925-51, July. [Downloadable!] (restricted)
6. Lööf, Hans & Heshmati, Almas, 2001. "On the Relationship between Innovation and Performance: A sensitivity Analysis," Working Paper Series in Economics and Finance 0446, Stockholm School of Economics, revised 01 Oct 2001. [Downloadable!]
   Other versions:
   • Hans Lööf & Almas Heshmati, 2006. "On the relationship between innovation and performance: A sensitivity analysis," Economics of Innovation and New Technology, Taylor and Francis Journals, vol. 15(4-5), pages 317-344, June. [Downloadable!] (restricted)
7. Roberta Capello, 2002. "Entrepreneurship and spatial externalities: Theory and measurement," The Annals of Regional Science, Springer, vol. 36(3), pages 387-402. [Downloadable!] (restricted)
8. Pfaffermayr, Michael & Bellak, Christian, 2000. "Why Foreign-Owned Firms are Different: A Conceptual Framework and Empirical Evidence for Austria," Discussion Paper Series 26372, Hamburg Institute of International Economics. [Downloadable!]
9. Paola Criscuolo & Rajneesh Narula & Bart Verspagen, 2005. "Role of home and host country innovation systems in r&d internationalisation: a patent citation analysis," Economics of Innovation and New Technology, Taylor and Francis Journals, vol. 14(5), pages 417-433, July. [Downloadable!] (restricted)
10. Martin Andersson & Olof Ejermo, 2005. "How does accessibility to knowledge sources affect the innovativeness of corporations?—evidence from Sweden," The Annals of Regional Science, Springer, vol. 39(4), pages 741-765, December. [Downloadable!] (restricted)
    Other versions:
    • Ejermo, Olof & Andersson, Martin, 2005. "How does Accessibility to Knowledge Sources Affect the Innovativeness of Corporations? Evidence from Sweden," CIRCLE Electronic Working Paper Series 2005-04, CIRCLE (Centre for Innovation, Research and Competence in the Learning Economy), Lund University.
    • Andersson, Martin & Ejermo, Olof, 2004. "How does Accessibility to Knowledge Sources affect the Innovativeness of Corporations? - Evidence from Sweden," Working Paper Series in Economics and Institutions of Innovation 3, Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies. [Downloadable!]
11. Jaffe, A.B. & Trajtenberg, M., 1992. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," Papers 14-92, Tel Aviv.
    Other versions:
    • Adam B. Jaffe & Manuel Trajtenberg & Rebecca Henderson, 1992. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," NBER Working Papers 3993, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    • Jaffe, Adam B & Trajtenberg, Manuel & Henderson, Rebecca, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, MIT Press, vol. 108(3), pages 577-98, August. [Downloadable!] (restricted)
12. Glaeser, Edward L., 1999. "Learning in Cities," Journal of Urban Economics, Elsevier, vol. 46(2), pages 254-277, September. [Downloadable!] (restricted)
    Other versions:
    • Edward L. Glaeser, 1997. "Learning in Cities," Harvard Institute of Economic Research Working Papers 1814, Harvard - Institute of Economic Research.
    • Edward Glaeser, 1997. "Learning in Cities," NBER Working Papers 6271, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
13. James D. Adams, 2002. "Comparative localization of academic and industrial spillovers," Journal of Economic Geography, Oxford University Press, vol. 2(3), pages 253-278, July.
    Other versions:
    • James D. Adams, 2001. "Comparative Localization of Academic and Industrial Spillovers," NBER Working Papers 8292, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
14. Börje Johansson & John Quigley, 2006. "Agglomeration and Networks in Spatial Economies," Berkeley Program on Housing and Urban Policy, Working Paper Series 1053, Berkeley Program on Housing and Urban Policy. [Downloadable!]
    Other versions:
    • Börje Johansson & John Quigley, 2003. "Agglomeration and networks in spatial economies," Papers in Regional Science, Springer, vol. 83(1), pages 165-176, October. [Downloadable!] (restricted)
    • Börje Johansson & John Quigley, 2003. "Agglomeration and networks in spatial economies," Economics of Governance, Springer, vol. 83(1), pages 165-176, October. [Downloadable!] (restricted)
15. Börje Johansson & Johan Klaesson & Michael Olsson, 2002. "Time distances and labor market integration," Papers in Regional Science, Springer, vol. 81(3), pages 305-327. [Downloadable!] (restricted)
16. Edward L. Glaeser & Hedi D. Kallal & Jose A. Scheinkman & Andrei Shleifer, 1991. "Growth in Cities," NBER Working Papers 3787, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
    • Glaeser, Edward L & Hedi D. Kallal & Jose A. Scheinkman & Andrei Shleifer, 1992. "Growth in Cities," Journal of Political Economy, University of Chicago Press, vol. 100(6), pages 1126-52, December. [Downloadable!] (restricted)
17. C. Antonelli & R. Marchionatti & Stefano Usai, 2000. "Productivity and External Knowledge: The Italian Case," Working Paper CRENoS 200009, Centre for North South Economic Research, University of Cagliari and Sassari, Sardinia. [Downloadable!]
18. Antonelli, Cristiano, 1994. "Technological Districts Localized Spillovers and Productivity Growth. The Italian Evidence on Technological Externalities in the Core Regions," International Review of Applied Economics, Taylor and Francis Journals, vol. 8(1), pages 18-30.
19. Johansson, Börje, 2004. "Parsing the Menagerie of Agglomeration and Network Externalities," Working Paper Series in Economics and Institutions of Innovation 2, Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies. [Downloadable!]

Cited by:
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1. Andersson, Martin & Lööf, Hans, 2008. "Learning-by-Exporting Revisited - the role of intensity and persistence," Working Paper Series in Economics and Institutions of Innovation 149, Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies. [Downloadable!]
2. Johansson, Börje & Lööf, Hans, 2008. "The Impact of Firm’s R&D Strategy on Profit and Productivity," Working Paper Series in Economics and Institutions of Innovation 156, Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies. [Downloadable!]
3. Gehl Sampath, Padmashree, 2006. "Indian Pharma Within Global Reach?," UNU-MERIT Working Paper Series 031, United Nations University, Maastricht Economic and social Research and training centre on Innovation and Technology. [Downloadable!]
4. Lööf, Hans, 2007. "Multinational Firms and Innovation: The Role of R&D Collaboration, Markets and Ownership," Working Paper Series in Economics and Institutions of Innovation 90, Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies. [Downloadable!]