2Baptista R.Geographical Clusters and Innovation Diffusion[].Technological Forecasting OO.21
3Piore MJ,Sabel CF.The Second Industrial Divide: Possibilities for Prosperity[]..1984
4Porter M E.Clusters and the New Economics of Competition[].Harvard Business.1998
5Baptista R,Swann P.Do firms in clusters innovate more?[].Research Policy.1998
6Khalid Nadvi.Collective Efficiency and Collective Failure: The Response of the Sialkot Surgical Instrument Cluster to Global Quality Pressures[].World Development.1999