← Search Econometrica Vol. 33 No. 2 1965 Monographie des treillis et Algebre de Boole R. Fortet; Michel Carvallo DOI10.2307/1909817 Volume33 Issue2 Pages470 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 ✓