← Search Econometrica Vol. 44 No. 3 1976 Constraints Often Overlooked in Analyses of Simultaneous Equation Models: A Further Reply Arnold Zellner DOI10.2307/1913995 Volume44 Issue3 Pages627 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 ✓