Key points are not available for this paper at this time.
Ronald S. Burt, Kenneth P. Christman, Harold C. Kilburn, Jr., Testing a Structural Theory of Corporate Cooptation: Interorganizational Directorate Ties as a Strategy for Avoiding Market Constraints on Profits, American Sociological Review, Vol. 45, No. 5 (Oct., 1980), pp. 821-841
Burt et al. (Wed,) studied this question.