← Search American Economic Review Vol. 74 No. 4 1984 A Test for Subadditivity of the Cost Function with an Application to the Bell System David S. Evans; James J. Heckman Volume74 Issue4 Pages615-623 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 ✓