5Bertinelli, L. and Duncan, B., 2004. “Urbanization and Growth.“ Journal of Urban Economics, Vol. 56, pp. 80 - 96.
6Black, D. and Henderson, J. V., 1999. “A Theory of Urban Growth.“ Journal of Political Economy, Vol. 107, pp. 252 - 284.
7Davis, J. C. and Henderson, J. V. , 2003. “Evidence on the Political Economy of the Urbanization Process.“ Journal of Urban Economics, Vol. 53, pp. 98 - 125.
8Duranton, G. and Puga, D., 2004. “Microfoundations of Urban Agglomeration Economies,“ in J. V. Henderson and J - F Thisse, eds., Handbook of Urban and Regional Economics, Vol. 4, Amsterdam: Elsevier- North Holland,pp.2 063 - 2 117.
9Gallup, J. L. ; Sacks, J. D. and Mellinger, A., 1999. “Geography and Economic Development.“ International Regional Science Review, Vol. 22, pp. 179 - 232.
10Henderson, J. V., 2003. “ Urbanization and Economic Development. “ Annals of Economics and Finance, Vol. 4, pp. 275 - 341.