2S. Hymer, ( 1976 ) The International Operations of National Fums : A Study of Direct Investment, Cambridge, Massachusetts: MIT Press.
3P.J. Buckley, (1990),Problems and Developments in the Core Theory of Transnational Business, Journal of International Business Studies, Fourth Quarter: 657-65.
4J. H. Dunning, (1993) The Theory of Transnational Corporations, London : Routledge.
5J. H. Dunning, ( 1995 ) ,Reappraising the Eclectic Paradigm in an Age of Alliance Capitalism,Journal of International Business Studies,26(3): 461-92.
6M. Porter, (1990),Competitive Advantages of Nations,New York: Free Press.