D. B. Audretsch and M. P. Feldman, R&D Spillovers and the Geography of Innovation and Production, American Economic Review, vol.86, pp.630-640, 1996.

D. B. Audretsch and M. P. Feldman, Knowledge Spillovers and the Geography of Innovation The Handbook of Regional and Urban Economics, 2004.

C. Autant-bernard, The Geography Of Knowledge Spillovers And Technological Proximity, Economics of Innovation and New Technology, vol.22, issue.4, pp.237-254, 2001.
DOI : 10.1016/0164-0704(92)90004-R

Z. J. Acs and A. D. , Innovation in Large and Small Firms, an Empirical Analysis, American Economic Review, vol.78, pp.678-690, 1988.

P. Combes and G. Duranton, Labour pooling, labour poaching, and spatial clustering, Regional Science and Urban Economics, vol.36, issue.1, pp.1-28, 2006.
DOI : 10.1016/j.regsciurbeco.2005.06.003

G. Duranton and D. Puga, Micro-foundations of Urban Agglomeration Economies " The Handbook of Regional and Urban Economics, 2004.

M. Fujita, P. Krugman, and A. Venables, The spatial economy; Cities, Regions and International Trade, 1999.

H. Gersbach and A. Schmutzler, External spillovers, internal spillovers and the geography of production and innovation, Regional Science and Urban Economics, vol.29, issue.6, pp.679-696, 1999.
DOI : 10.1016/S0166-0462(99)00026-5

H. Gersbach and A. Schmutzler, Endogenous Spillovers and Incentives to Innovate, SSRN Electronic Journal, vol.21, pp.59-79, 2003.
DOI : 10.2139/ssrn.147917

URL : http://www.zora.uzh.ch/1165/1/Gersbach_2003V.pdf

A. B. Jaffe, Real Effects of American Research, American Economic Review, vol.79, pp.957-970, 1989.

G. Ottaviano and F. Robert-nicoud, The 'genome' of NEG models with vertical linkages: a positive and normative synthesis, Journal of Economic Geography, vol.6, issue.2, pp.113-139, 2006.
DOI : 10.1093/jeg/lbh070

F. Robert-nicoud, The structure of simple 'New Economic Geography' models (or, On identical twins), Journal of Economic Geography, vol.5, issue.2, pp.1-34, 2004.
DOI : 10.1093/jnlecg/lbh037