R&D, structural change and productivity: The role of high and medium-high technology industries C.A. Varum B. Cibrão A. Morgado J. Costa Publication Journal: Economia Aplicada Year of Publication: 2009 Volume: 13 Issue: 4 Pagination: 399-424 Identifiers Other Numbers: 2-s2.0-77955539798 Alternative titles DOIGoogle ScholarBibTeXRIS Locators