6David. How should companies interact in business networks? [J]. Journal of business research, 2007, 55 (2): 133-139.
7Chao-cheng Mai, Shin-kun Pang. Cooperation competition in spatial model[J].Regional science and urban economics, 2007, 29 (4): 463-472.
8Michael Ehret. Managing the trade-off between relation ships and value networks: To wards value-based approach of customer relationship management in business-to-to business markets [J].Industrial marketing management, 2006,33(6):465-473.
9Freeman. Network of Innovators.. a Synthesis of Research Issues[J].Research Policy, 1991, vlo. 20: 499-514.
