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Journal Article Vertical Integration, Variable Proportions and Oligopoly Get access Michael Waterson Michael Waterson University of Newcastle upon Tyne Search for other works by this author on: Oxford Academic Google Scholar The Economic Journal, Volume 92, Issue 365, 1 March 1982, Pages 129–144, https://doi.org/10.2307/2232260 Published: 01 March 1982
Michael Waterson (Mon,) studied this question.