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Journal Article The Diagrammatical Representation of Elasticity of Demand Get access A. P. Lerner A. P. Lerner London School of Economics Search for other works by this author on: Oxford Academic Google Scholar The Review of Economic Studies, Volume 1, Issue 1, October 1933, Pages 39–44, https://doi.org/10.2307/2967436 Published: 01 October 1933
A. P. Lerner (Sun,) studied this question.