1. Krugman ,P R· Increasing returns and economic geography [J]·Journal of Political Economy,1991(99): 483~499.
2. Porter,M.E.(1990)"The Competitive Advantage of nations "
3. Amiti,M.Location of Vertically Linked Industries:Agglomeration Versus Comparative Advantage[J].European Economic Review,2005,
4,Krugman, P., 1998, “Space: the final frontier”, Journal of Economic Perspectives, 12, 161-174.
5,Krugman, P., 1991, “History and industry location: the case of the manufacturing belt”, American Economic Review, 81, 80-83.
6.Krugman, P., 1998, “Space: the final frontier”, Journal of Economic Perspectives, 12, 161-174.
Thanks!!!