3Geoff R, Hervey G. Comparison of gravity model, survey and lo- cation quotient- based local area tables and multipliers[ J]. Re- gional Studies, 2006(9) :1069 - 1081.
4Sporri VC, Borsuk M, Peters I. The economic impacts of river rehabilitation : A regional input - output analysis [ J ]. Ecological Economics,2007(2) :341 - 351.
5Hadi -Vencheh, Foroughi, Soleimani-damaneh. A DEA model for resource allocation[J]. Economic Modelling,2008(25) :983 -993.
6Porter M. Clusters and the new economics of competition [J]. Harvard Business Review, 1998 (6) :77 - 90.