1BURGESS E W. The growth of the city : an introduction to a research project[M]//PARK R E, BURGESS E W, MCK- ENZIE R. The city. Chicago: University of Chicago Press, 1925:47 - 62.
2MILLS E S, HAMILTON W. Urban economics [ M ]. Glenview, Illinois: Scott, Foresman and Company, 1988.
3ISARD W. Location and space economy: a general theory relating to industrial location, market areas, land use, trade and urban structure[ M]. New York: Wiley, 1956.