← Search Econometrica Vol. 28 No. 4 1960 Single Equation Vs. Equation System Methods of Estimation in Econometrics L. R. Klein DOI10.2307/1907568 Volume28 Issue4 Pages866 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 ✓