← Search American Economic Review Vol. 69 No. 2 1979 The Economic Gradient Method Robert D. Willig; Elizabeth E. Bailey Volume69 Issue2 Pages96-101 Sources bibtex:phds-export.bib 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 ✓