← Search Econometrica Vol. 27 No. 1 1959 Mathematische Statistik J. Pfanzagl; B. L. van der Waerden DOI10.2307/1907787 Volume27 Issue1 Pages133 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 ✓