3Klein, B., P.. A. Crawford, A. Alchian. Vertical Integration, Appropriable Rents, and the Competitive Contracting Process. Journal of Law and Economics, 1978 (21):297-326.
4Willianmson,O. E. Markets and Hierarchies:Analysis and Antitrust Implications.New York:Free Press, 1975.
5Willianmson, O. E. Transaction-Cost Economics:The Governance of Contractual Relations.Journal of Law and Economics, 1979(22):233-261.
