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R&D depreciation, stocks, user costs and productivity growth for US R&D intensive industries
(2006)
This paper estimates R&D depreciation rates for U.S. R&D intensive industries. R&D annually depreciates at
Research spillovers among European and North-American economics departments
(2004)
In this paper, we investigate the determinants of research output by European economics departments. We use data from a survey we conducted on the various characteristics of these departments. We pay particular attention ...