Z. J. Acs, D. B. Audretsch, and M. P. Feldman, Real effects of academic research: comment, American Economic Review, vol.82, pp.363-367, 1992.

Z. J. Acs, L. Anselin, and A. Varga, Patents and innovation counts as measures of regional production of new knowledge, Research Policy, vol.31, issue.7, pp.1069-1085, 2002.
DOI : 10.1016/S0048-7333(01)00184-6

B. S. Aharonson, J. Baum, and M. Feldman, Industrial clustering and the returns to inventive activity: Canadian biotechnology firms, pp.4-7, 1991.

P. Almeida and B. Kogut, Localization of Knowledge and the Mobility of Engineers in Regional Networks, Management Science, vol.45, issue.7, pp.905-918, 1999.
DOI : 10.1287/mnsc.45.7.905

A. Amin and P. Cohendet, Learning and adaptation in decentralised business networks'' Environment and Planning D: Society and Space, pp.87-104, 1999.

D. B. Audretsch and M. Feldman, R&D spillovers and the geography of innovation and production, American Economic Review, vol.86, pp.630-640, 1996.

P. Azoulay, Acquiring knowledge within and across firm boundaries: evidence from clinical development'', WP 10083Do innovations diffuse faster within geographical clusters, National Bureau of Economic Research International Journal of Industrial Organization, vol.18, pp.515-535, 2000.

R. Baptista and P. Swann, Do firms in clusters innovate more?, Research Policy, vol.27, issue.5, pp.525-540, 1998.
DOI : 10.1016/S0048-7333(98)00065-1

H. Bathelt and A. Graft, Internal and external dynamics of the Munich film and TV industry cluster and the international entertainment sector, 2006.

H. Braczyk, P. Cooke, and M. Heidenreich, Regional Innovation Systems : The Role of Governances in a Globalized World, 1998.

S. Breschi and F. Lissoni, Knowledge Spillovers and Local Innovation Systems: A Critical Survey, Industrial and Corporate Change, vol.10, issue.4, 2001.
DOI : 10.1093/icc/10.4.975

S. Breschi, F. Lissoni, M. Bocconi, S. Breschi, and F. Malerba, Mobility and social networks: localised knowledge spillovers revisited'', working paper series, Centre for Research on Innovation and InternationalisationNetworks of knowledge through patent citations: an analysis of EPO patent citations data'', paper presented at DRUID Summer Conference, 2003.

S. Breschi, F. Lissoni, and F. Malebra, Knowledge networks from patent citations: methodological issues and preliminary results'', paper presented at DRUID Summer Conference, 2003.

J. Cantwell and S. Iammarino, EU Regions and Multinational Corporations: Change, Stability and Strengthening of Technological Comparative Advantages, Industrial and Corporate Change, vol.10, issue.4, pp.1007-1037, 2001.
DOI : 10.1093/icc/10.4.1007

B. Ceh, Regional innovation potential in the United States: Evidence of spatial transformation, Papers in Regional Science, vol.80, issue.3, pp.297-316, 2001.
DOI : 10.1111/j.1435-5597.2001.tb01801.x

C. Co, Evolution of the Geography of Innovation: Evidence from Patent Data, Growth and Change, vol.45, issue.4, pp.393-523, 2002.
DOI : 10.1111/1468-2257.00204

M. Gertler, Tacit knowledge and the economic geography of context, or The undefinable tacitness of being (there), Journal of Economic Geography, vol.3, issue.1, pp.75-99, 2003.
DOI : 10.1093/jeg/3.1.75

E. Glaeser, Learning in Cities, Journal of Urban Economics, vol.46, issue.2, pp.254-277, 1999.
DOI : 10.1006/juec.1998.2121

Z. Griliches, Patent statistics as economic indicators: a survey, Journal of Economic Literature, vol.28, pp.1661-1707, 1990.
DOI : 10.3386/w3301

L. Hakanson, EPISTEMIC COMMUNITIES AND CLUSTER DYNAMICS: ON THE ROLE OF KNOWLEDGE IN INDUSTRIAL DISTRICTS., Academy of Management Proceedings, vol.2004, issue.1, pp.433-463, 2005.
DOI : 10.5465/AMBPP.2004.13862966

B. H. Hall, A. B. Jaffe, M. Trajtenberg, D. Hicks, T. Breitzman et al., The NBER patent citations data file: lessons, insights and methodological toolsThe changing composition of innovative activity in the US: a portrait based on patent analysis, National Bureau of Economic Research Research Policy, vol.8498, issue.30, pp.681-703, 2001.

C. Hipp and H. Grupp, Innovation in the service sector: The demand for service-specific innovation measurement concepts and typologies, Research Policy, vol.34, issue.4, pp.517-535, 2005.
DOI : 10.1016/j.respol.2005.03.002

A. Jaffe, Real effects of academic research, American Economic Review, vol.79, pp.957-970, 1989.

A. Jaffe, The U.S. patent system in transition: policy innovation and the innovation process, Research Policy, vol.29, issue.4-5, pp.531-557, 2000.
DOI : 10.1016/S0048-7333(99)00088-8

URL : https://hal.archives-ouvertes.fr/hal-00874771

A. B. Jaffe and M. S. Fogarty, The meaning of patent citations: report on the NBER/Case-Western Reserve Survey of Patentees, National Bureau of Economic Research, vol.763, issue.1, 2000.
DOI : 10.3386/w7631

A. B. Jaffe and M. Trajtenberg, Flows of knowledge from universities and federal laboratories: Modeling the flow of patent citations over time and across institutional and geographic boundaries, Proceedings of the National Academy of Sciences of the United States, pp.12671-12677, 1996.
DOI : 10.1073/pnas.93.23.12671

A. B. Jaffe, M. Trajtenberg, and R. Henderson, Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations, The Quarterly Journal of Economics, vol.108, issue.3, pp.577-598, 1993.
DOI : 10.2307/2118401

A. B. Jaffe, M. S. Fogarty, and B. Banks, Evidence from Patents and Patent Citations on the Impact of NASA and Other Federal Labs on Commercial Innovation, The Journal of Industrial Economics, vol.46, issue.2, p.205, 1998.
DOI : 10.1111/1467-6451.00068

D. K. Johnson and A. Brown, How the West Has Won: Regional and Industrial Inversion in U.S. Patent Activity, Economic Geography, vol.10, issue.3, pp.241-260, 2004.
DOI : 10.1111/j.1944-8287.2004.tb00234.x

D. Johnson, N. Siripong, and A. Brown, The Demise of Distance? The Declining Role of Physical Proximity for Knowledge Transmission, Growth and Change, vol.88, issue.1, pp.19-33, 2006.
DOI : 10.1111/0022-4146.00175

M. Kelly and A. Hageman, Marshallian externalities in innovation, Journal of Economic Growth, vol.4, issue.1, pp.39-54, 1999.
DOI : 10.1023/A:1009874508579

E. E. Leamer and M. Storper, The Economic Geography of the Internet Age, Journal of International Business Studies, vol.32, issue.4, pp.641-665, 2001.
DOI : 10.1057/palgrave.jibs.84909988

F. Levy and R. J. Murnane, The New Division of Labor: How Computers Are Creating the Next Job Market, 2004.
DOI : 10.1515/9781400845927

F. Lissoni, Knowledge codification and the geography of innovation: the case of Brescia mechanical cluster, Research Policy, vol.30, issue.9, pp.1479-1500, 2003.
DOI : 10.1016/S0048-7333(01)00163-9

B. Lundvall and J. B. , The Learning Economy, Journal of Industry Studies, vol.4, issue.3, pp.23-42, 1994.
DOI : 10.1016/0048-7333(84)90018-0

URL : https://hal.archives-ouvertes.fr/halshs-00464519

J. Mccallum, National borders matter: Canada ^ US regional trade patterns, American Economic Review, vol.85, pp.615-623, 1995.

P. B. Maurseth and B. Verspagen, Knowledge Spillovers in Europe: A Patent Citations Analysis, Scandinavian Journal of Economics, vol.104, issue.4, pp.531-545, 2002.
DOI : 10.1111/1467-9442.00300

O. Huallachaïn, B. B. Leslie, and T. , Patent Places: Size Matters, Spatial convergence and spillovers in American invention'' Annals of the Association of American Geographers, pp.866-886, 1999.
DOI : 10.1111/0022-4146.00152

P. Patel and K. Pavitt, Larger firms in the production of the world's technology: an important case of`nonof`non-globalization, Journal of International Business Studies, vol.22, pp.35-54, 1991.

M. E. Porter, Location, Competition, and Economic Development: Local Clusters in a Global Economy, Economic Development Quarterly, vol.14, issue.1, pp.15-34, 2000.
DOI : 10.1177/089124240001400105

A. Saxenian, Regional Advantage: Culture and Competition in Silicon Valley and Route 128, 1994.

F. Scherer, The propensity to patent, International Journal of Industrial Organization, vol.1, issue.1, pp.107-128, 1983.
DOI : 10.1016/0167-7187(83)90026-7

A. Scott, Technopolis: High-technology Industry and Regional Development in Southern California, 1993.

M. Storper, The Regional World: Territorial Development in a Global Economy, 1997.

M. Storper and A. J. Venables, Buzz: face-to-face contact and the urban economy, Journal of Economic Geography, vol.4, issue.4, pp.351-370, 2004.
DOI : 10.1093/jnlecg/lbh027

P. Thompson and M. Fox-kean, Patent Citations and the Geography of Knowledge Spillovers: A Reassessment, American Economic Review, vol.95, issue.1, pp.450-460, 2005.
DOI : 10.1257/0002828053828509

B. Verspagen and W. Schoenmakers, The spatial dimension of patenting by multinational firms in europe, Journal of Economic Geography, vol.4, issue.1, pp.23-42, 2004.
DOI : 10.1093/jeg/4.1.23

M. A. Zook, The Web of Production: The Economic Geography of Commercial Internet Content Production in the United States, Environment and Planning A, vol.80, issue.3, pp.411-426, 2000.
DOI : 10.1068/a32124

M. Zook, Hubs, nodes and by-passed places: a typology of e-commerce regions in the United States, Tijdschrift voor Economische en Sociale Geografie, vol.93, issue.5, pp.509-521, 2002.
DOI : 10.1111/1467-9663.00222

L. G. Zucker, M. R. Darby, and J. Armstrong, GEOGRAPHICALLY LOCALIZED KNOWLEDGE: SPILLOVERS OR MARKETS?, Economic Inquiry, vol.12, issue.3, pp.65-86, 1998.
DOI : 10.1111/j.1465-7295.1998.tb01696.x