7XiaoKai Yang and Ng Y. K;Theory of the Firm and Structure of Residual Rights, Journal of Economy Be-haviour and rgannisation, 1995: 107-128.
8Bergman, Edward M.and Feser, Edward J.: Industrial and regional Clusters:Concepts and Comparative Applications , http ://www. rri. edu/Webbook/Bergman - Feser.
9Best.The new competitive advantage:the renewal ofAmerican industry[]..2001
10Porter M E.Clusters and the new economics of competition[].Harvard Business.1998