← Search Econometrica Vol. 31 No. 4 1963 Economic Theory and Operations Analysis S. Sankar Sengupta; William J. Baumol DOI10.2307/1909177 Volume31 Issue4 Pages765 Sources semanticscholar openalex crossref Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓