Journal Article A Simple Proof of the Nonsubstitution Theorem Get access Parkash Chander Parkash Chander Indian Statistical Institute and University of Rochester Search for other works by this author on: Oxford Academic Google Scholar The Quarterly Journal of Economics, Volume 88, Issue 4, November 1974, Pages 698–701, https://doi.org/10.2307/1881834 Published: 01 November 1974