共 50 条
- [21] PATENTS AS A MEASURE OF R AND D PRODUCTIVITY DRUG & COSMETIC INDUSTRY, 1974, 114 (02): : 43 - &
- [22] EFFECTS OF GOVERNMENT R-AND-D ON PRIVATE R-AND-D INVESTMENT AND PRODUCTIVITY - A MACROECONOMIC ANALYSIS BELL JOURNAL OF ECONOMICS, 1983, 14 (02): : 551 - 561
- [23] PATENTS, INVENTION, AND ECONOMIC CHANGE - GRILICHES,Z AND HURWICZ,L JOURNAL OF THE PATENT OFFICE SOCIETY, 1974, 56 (02): : 126 - 128
- [26] R-AND-D SPENDING VS NATIONAL PRODUCTIVITY INDUSTRIAL RESEARCH & DEVELOPMENT, 1983, 25 (04): : 187 - 187
- [28] FEEDBACK FROM PRODUCTIVITY GROWTH TO R-AND-D SCANDINAVIAN JOURNAL OF ECONOMICS, 1983, 85 (02): : 147 - 157