6Kotler,P. Marketing Management. Prentice Hall, New Jersey, 1997.
7Porter, M.E.Competitive Advantage. Free Press, New York,1985.
8Nirmalya Kumar, Lisa Scheer and Philip Kotler, From Market Driven to Market Driving.European Management Journal,Vol.18,No.2, April 2000,PP129-142.
9Banry J.Nalebuff and Adam M. Brandenburger,Coopertition:Copetyition and Cooperation Business Strategy for the Digital Economy,Strategy & Leadership, November/December 1997.
