← Search Econometrica Vol. 40 No. 1 1972 Economic Statistics and Econometrics A. R. Bergstrom; Edward J. Kane DOI10.2307/1909736 Volume40 Issue1 Pages210 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 ✓