4Mills E S. An aggregative model of resource allocation in a metropolitan area [J]. American Economic Review, 1967,57 : 197-210.
5Henderson J. Systems of cities in closed and open economies[J]. Regional Science and Urban Economics, 1982,12: 325-350.
6Sullvan A M. A general equilibrium model with external scale economies in production [J]. Journal of Urban Economics, 198a, 13: 235 -255.
7Abdel-Rahman H M. Agglomeration economies, types, and sizes of cities[J]. Journal of Urban Economics, 1990,27: 25 -45.
8Abdel-Rahman H M. When do cities specialize in production[J]. Regional Science and Urban Economics, 1996,26 : 1 -22.
9Beeson P E. Total factor productivity growth and agglomeration economies in manufacturing 1959- 1973[J]. Journal of Regional Science, 1987,27 : 183- 199.
10Henderson J V,A Mitra. The new landscape : Developers and edge cities[J]. Regional Science and Urban Economics, 1996,26 : 613-643.