2D C . Mowery, N, Rsenberg, The influence of market drmand upon innovation: A critical review of some recent ernpirical studies, Res. Policy 8 (2) (1978) 102-153.
3E Von Hippel, The Sources of Innovation, Oxiord Univ. Press, Oxford, 1988,.
4R R Nelson (Ed), National Innovation Systems: A Comparative AnalysisOxford Uni. Press, 1993.
5P Dasgupta, I Serageldin (Eds), Social Capital: A Muitifaceted Perspected World Bank, Washington, DC,2000.