← Search American Economic Review Vol. 81 No. 1 1991 Ski-Lift Pricing, with Applications to Labor and Other Markets: Reply Robert J. Barro; Paul M. Romer Volume81 Issue1 Pages378-380 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 ✓