5SUREN K,WAYNE T. Economic impacts of the saskatchewan agriculture and food cluster on the saskatchewan economy[R]. Working Paper, Department of Agricultural Economics, Uni- versity of Saskatchewan, Saskatoon, July, 2005.
6SHANTHA L. Breeding innovation clusters through collaborative research networks [J]. Technovation, 1995,9(15) :553-567.
7OECD. Innovative clusters: Drivers of national innovation sys-tems ,ems[J]. ECD Proceedings,2001.
8NATHAN R,CLAUDIO R F. Technological innovation and long waves [J].Cambridge Journal of Economics, 1984 (1) :53- 59.
9CHRIS D. Breeding innovation clusters: A source of dynamic development [J ].World Development, 1989 ( 17 ) : 1-16.
10PARK S O. Economic spaces in the pacific rim: A paradigm shift and new dynamics [J]. Papers in Regional Science, 2003,82 ( 2 ) : 223-225.
