7Prahalad, C. K. and G. Hamel, The core-competence of the corporation. Harvard Business Review, Vol. 68, No. 3, 1990, pp. 79 -91.
8Leonard-Barton, D., Core Capabilities and core rigidities: A paradox in managing new product development. Strategic Management Journal, Summer Special Issue, No.13, 1992, pp.111-125.
9Teece, D., G. Pisano, and A. Shuen, Dynamic capabilities and strategic management. Strategic Management Journal, Vol. 18, No. 7,1997, pp.509 - 553.
10Zeitham J. V A., Consumer perceptions of price, quality, and value : a mean - end model and synthesis of evidence. Journal of Marketing, 52(3), 1988,pp. 2 - 22.