← Search Econometrica Vol. 24 No. 4 1956 Monopoly and Competition and Their Regulation Frank Hahn; Edward H. Chamberlin DOI10.2307/1905505 Volume24 Issue4 Pages498 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 ✓