4Caves, R E. 1984, "Economic Analysis and the Quest for Competitive Advantage", American Economies Review Papers and Proceedings 74:127-32.
5Foss, N J, 1993, "Theories of the Firm: Competence and Contractual Perspectives", Journal of Evolutionary Economics 3:127-44.
6Teece, D J, Pisano, G And Shuen, A. 1990, "Firm Capabilities, Resources and Concept of Strategy", CCC Working Paper. University of California at Berkeley.
