Christaller W. Central Places in Southern Germany. Translated from the 1933 German edition by Chang Z W, Wang X Z. Beijing: The Commercial Press, 1998.
[9]
L？sch A. The Economics of Location. 2nd ed. Connecticut: New Haven, 1954.
[10]
Isard W. Location and Space Economy. Cambridge, MA: MIT Press, 1956.
[11]
Reilly W J. Methods for the study of retail relationship. University of Texas Bulletin, 1929, 2944: 29-44.
Friedmann J. The world city hypothesis. Development and Change, 1986, 17(1): 69-83.
[15]
Batten David F B. Network cities: Creative urban agglomerations for the 21st century. Urban Studies, 1995, 32( 2) : 313-327．
[16]
Paterson J H. Heartland and hinterland: A geography of Canada. The Geographical Journal, 1983, 149(3): 363-364.
[17]
Ohmae K. Thd End of the Nation State. New York: Free Press, 1995.
[18]
Du Guoqing. Using GIS for analysis of urban system. GeoJournal, 2001, 52: 213-221．
[19]
Huff D L, Lutz J M. Urban spheres of influence in Ghana. The Journal of Developing Areas, 1989, 23(2): 201-220.
[20]
Huff D L, Lutz J M. Change and continuity in the Irish urban aystem, 1966-81, Urban Studies, 1995, 32(1): 155-173.
[21]
Deng Yu, Liu Shenghe. Field modeling method for identifying urban sphere of influence: A case study on Central China. Chinese Geographical Science, 2010, 20(4), 353-362.
