← Search Econometrica Vol. 10 No. 3/4 1942 Theoretical Derivation of Elasticities of Demand and Supply: The Direct Method Oscar Lange DOI10.2307/1905464 Volume10 Issue3/4 Pages193 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 ✓