6Marshall, Alfred. Principles of Economics [M]. London: Macmillan Press, 1961:32-39.
7埃德加.M.胡佛.区域经济学导论[M].北京:商务印书馆,1990.11.
8Lundvall. B-A innovation as an interactive process: from user-producer interaction to the national system of innovation. In Dosi et al: Technical change and Economic theory [M]. Pinter publ, 1988.
9Krugman, P. Geography and trade [M]. Cambridge, MA:MIT press; 1991b.
10Claude, E. Shannon. A mathematical theory of communication [J]. Bell System Technical Journal,1948,27(3,4): 379- 423, 623-656.