← Search Research Policy 1994 Medical innovations in historical perspective S.S. Blume Wetenschapsdynamica, Universiteit van Amsterdam Canada DOI10.1016/0048-7333(94)90009-4 Sources semanticscholar openalex 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 ✓