1. The Vertical Integration of Production: Market Failure Considerations;Williamson;American Economic Review,1971
2. Baumol, W., Panzar, J. and Willig, R. (1982), “Contestable markets and the theory of industry structure”, Harcourt Brace Jovanovich, San Diego, CA.
3. Vertical mergers and market foreclosure”;Salinger;The Quarterly Journal of Economics,1988
4. Hart, O. and Tirole, J. (1990) “Vertical Integration and Market Foreclosure,” Brookings Papers in Economic Activity: Microeconomics, 205-276.
5. Spengler, J. (1950), “Vertical integration and anti-trust policy”, Journal of Political Economy, 58: 347-352.