См. соответственно: Robert D. Buzzell. Is Vertical Integration Profitable? // Harvard Business Review, January – February 1983; Richard A. D’Aveni and D. J. Ravenscraft. Economies of Integration Versus Bureaucracy Costs: Does vertical integration improve performance // Academy of Management Journal 37 (8) 1994. P. 1167–1206; Richard T. Mpoyi and К. E. Bullington. Performance Implications of Changing Vertical Integration Strategies // American Business Review, January 2004.