4Pouder, R. and st. John, C. H. Hot Spots and Blind Spots:Geographical Clusters of Firm s and lnovation [J]. The Academy of Management in Review, 1996,21 (4) : 1192 - 1225.
5Ahokangas P, Rasanen, Hyry M. Small technolo- gy- based Firms in Fast- growing Regional Cluster[ J ]. New England Journal of Entrepreneurship, 1999, (2) :214 - 239.