6Fujita,Krugman M.P.,and Venables A.J.,The Spatial Economy:Cities,Regions,and International Trade[M].MIT Press.Cambridge MA,USA.1999.
7Anselin,L,,Bera,A.K,,Florax,R,,Yoon,M.J.,1996,Simple Diagnostic Tests for Spatial Dependence[J].Regional Science and Urban Economics,1996,26(1):77-104.
8Michael Lipton,Why Poor People Stay Poor.Urban Bias in World Development[M].Cambridge,MA:Harvard University Press,1977.Robert Bates,Markets and States in Tropical Afica.Berkeley:University of California Press,1981.