← Search American Economic Review Vol. 87 No. 2 1997 Quality Change and New Products Robert J. Gordon; Zvi Griliches Volume87 Issue2 Pages84-88 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 ✓