1Abdel - Rahman, H. M. and Fujita, M., 1990. "Product Variety, Marshallian Externalities, and City Sizes." Journal of Regional Science,30(2), pp. 165 - 183.
2Bagnasco, A., 1997. Tre Italie: La Problematica Territoriale Dello Sviluppo Itahano. Bologna,Ⅱ Mulino.
3Chrisrtopherson, S., and Storper, M., 1986. "The City as Studio, the World as Back Lot: The Impact of Vertical Disintegration on the Location of the Motion Picture Industry." Environment and Planning D: Society and Space,4,pp. 161 -320.
4Duranton, G. and Puga, D., 2002. " From Sectoral to Functional Urban Specialization." NBER Working Paper, August,No.W9112.
5Ellision, G. and Glaeser, E. L., 1999. "The Geographic Concentration of Industry: Does Natural Advantage Explain Agglomeration?"The American Economic Review,89( 2 ), pp.311 -316.
6Fujita, M. ; Krugman, P. and Vensbles, A. J., 1999. The Spatial Economy: Cities, Regions, and International Trade.Cambridge: MIT Press.
7Fujita,M.and Thisse,J. F. ,2002. Economics of Agglomeration:Cities, Industrial location and Regional Growth. Cambridge:Cambridge University Press.
8Henderson, J. V., 1996. "Equilibrium Locations of Vertically Linked Industries." International Economic Review, 37, pp. 341 -359.
9Henderson, J. V. and Becker, R., 2000. "Political Economy of City Sizes and Formation." Journal of Urban Economics,48(3),pp. 453 - 484.
10Hotelling,H., 1929. "Stability in Competition." Economic Journal,39, pp.41 - 57.
