8BAIN J S. Relation of Profit Rate to Industry Conentra- tion: American Manufacturing, 1936-1940[J]. Quarterly Journal of Economics, 1951,65 (8) :314 - 317.
9SCHOEFFLER S,BUZZEL R D, HEANY D F. Im- pact of Strategic Planning on Profit Performance[J].Harvard Business Review, 1974,52(3/4) : 137- 145.
10LANSITI M, LEVIEN R. The Keystone Advantage: What the New Dynamics of Business Ecosystems Mean for Mean for Strategy, Innovation, and Sus- tainability [ M ]. Boston, MA: Harvard Business Press,2004.
