1. Concept of statistical measurement of vertical integration;Adelman,1955
2. Vertical integration and communication;Arrow;Bell Journal of Economics,1975
3. Marketing cost ratios of U.S. manufacturers;Bailey,1975
4. Law and economics of vertical integration;Blair,1983
5. Price-cost margins in producer goods industries and the importance of being unimportant;Bradburd;Review of Economics and Statistics,1982