5[5]Kam Wing Chan.Cities with Invisible Walls[M].Oxford University Press,1994.
6[6]Laurence J.c.Ma and Fulong Wu.Restructuring the Chinese City:Changing Socimy,Economy and Space[M].London and New York:Routledge,2005.
7Friedmann J. Four theses in the study of China's urbanization. International Journal of Urban and Regional Research,2006,30(2).
8Liu S,Li X, Zhang M. Scenario analysis on urban- ization and rural-urban migration in China. Interim Report,IR-03-036, International Institute of Applied Systems Analysis,Laxenburg,Austria,2003.
9United Nations Human Habitat. Urban Indicators Guideliners, United Nations Human Settlement Programme. New York:United Nations Publications, 2004.9.