Papers and Proceedings of the Hundred and Fifth Annual Meeting of the American Economic Association || Equilibrium R&D and the Patent--R&D Ratio: U.S. Evidence
Samuel KortumVolume:
83
Language:
english
Journal:
The American Economic Review
DOI:
10.2307/2117707
Date:
May, 1993
File:
PDF, 309 KB
english, 1993