4GRABHER, GERNOT. The Weakness of Strong Ties: The Lock - in of Regional Development in the Ruhr Area[C]. In G. Grabher, ed., The Embedded Firm, London: Routledge, 1993.
9BATHELT, H., MALMBERG A., MASKELL P. Clusters and knowledge: Local buzz, global pipelines and the process of knowledge creation[J]. Progress in Human Geography, 2004(28): 31 -56.
10HUMPHREY, J. Upgrading in Global Value Chains. Policy Integration Department[J] . World Commission on the Social Dimension of Globalization, International Labour Office. Working Paper No. 28.
5Porter M. E, Clusters and New Economic of Competition[J]. Harvard Business Review, November-December, 1998
6Best, Michael H. Cludster Dynamics, Ch. 3 in. The nes competitive Advantage: The Renewal of Anerican Industry[M]. Oxford University Press, 2001
7Tiehy, Clusters: Less Dispensable and More Risky than Ever, Cluster and Regional Specialisation, Published by Pion Limited, 207 Brondesbury Park, London NW25JM, 1998
