5[1]M.Porter.The Competitive Advantage of Nations[J].New York:The Free Press.1990.
6[2]Schmitz.Global Competition and Local Cooperation:Success and Failure in the Sinos Valley,Brazil[J].World Development,1999,Volume 27,Number 9:28-38.
7[3]UNCTAD.Promoting and Sustaining SMEs Clusters and Networks for Development, Expert Meeting.1998.
8[4]UNCTAD.Policies and Non-Fiscal Measures for Upgrading SME Clusters,Commission on Enterprise, Business Facilitation and Development.1999.