Brouwer, Erik; Kleinknecht, Alfred; Mohnen, Pierre; … - Centre Interuniversitaire de Recherche en Analyse des … - 2001
From cross-sectional data of 460 firms that responded to both the 1988 and the 1992 Dutch innovation surveys we have reexamined the causality direction between R&D and patents, using data on contemporaneous and four-year lagged patent applications and R&D expenditures. The two equations have...