← Search Research Policy 1996 Horizontal diversification in the Danish national system of innovation: the case of pharmaceuticals Keld Laursen Aalborg University DOI10.1016/s0048-7333(96)00894-3 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 ✓