[53] Clark, B. H. Marketing performance measures: History and interrelationships[J]. Journal of Marketing Management, 1999, 15: 711-732.
[54] Cohen, W. M., Levinthal, D. A. Absorptive Capacity: a New Perspective on Learning and Innovation[J]. Administrative Science Quarterly, 1990, 35(1): 128-145.
[55] Collis, D. J. Research Note: How Valuable are Organizational Competence[J]. Strategic Management Journal, 1994, 15: 143-152.