6SCHUMPETER J. Capitalism, socialism and democracy[M]. New York: Harper and Brothers, 1942.
7FREEMAN C. The new palgrave: a dictionary of econom- ics[M]. London: Palgrave Macmillan, 1987.
8HENDERSON J V, VENABLES A J. The dynamics of city formation[J].Review of Economic Dynamics, 2009, 12(2) : 233-254.
9ROZENBLAT C, PUMAIN D. Firm linkages, innovation and the evolution of urban systems// TAYLOR P, DER- UDDER B, SAEY P, et al. Cities in globalization: prac- tices, policies and theories [M]. London: Routledge, 2007.
10HUDSON R. The learning economy, the learning firm and the learning region, a sympathetic critique of the limits to learning[J]. European Urban and Regional Studies, 1999, 6(1) :59-72.
