5Anselin L, Varga A, Acs Z. Local geographic spillovers between university research and high technology innovations [J].Journal of urban economics, 1997,42(3): 422-448.
6Gaspar J, Glaeser E L. Information technology and the future of cities[J]. Journal of urban economics, 1998, 43(1): 136- 156.
7Urban development in the United States[J]. Southern Economic Journal, 2000, 66(4): 855-880.
8Betts J, Lee C W B. Universities as drivers of regional and national innovation: an assessment of the linkages from universities to innovation and economic growth[M]. Montreal and Kingston: MeGill-Queen's University Press, 2005: 113-157.
9Jaffe A B, Trajtenberg M, Henderson R. Geographic localization of knowledge spillovers as evidenced by patent citations[J]. Quarterly Journal of Economics, 1993(108): 577-598.
10Wolfe D A. The role of universities in regional development and eluster formation[ M ]. Toronto: University of Toronto Press, 2005: 316-340.
