← Search Econometrica Vol. 25 No. 2 1957 Encyclopedia of Economics (Keizaigaku Daijiten) Hiroshi Takeda; Ichiro Nakayama DOI10.2307/1910278 Volume25 Issue2 Pages388 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 ✓