共 16 条
- [1] BANIA N, 1987, JUL W EC ASS M
- [2] BOUND J, 1984, R D PATENTS PRODUCTI, pCH2
- [3] CAMERON AC, 1986, J APPLIED ECONOMETRI, V1, P29, DOI DOI 10.1002/JAE.3950010104
- [5] PSEUDO MAXIMUM-LIKELIHOOD METHODS - APPLICATIONS TO POISSON MODELS [J]. ECONOMETRICA, 1984, 52 (03) : 701 - 720
- [6] ISSUES IN ASSESSING THE CONTRIBUTION OF RESEARCH AND DEVELOPMENT TO PRODUCTIVITY GROWTH [J]. BELL JOURNAL OF ECONOMICS, 1979, 10 (01): : 92 - 116
- [7] GRILICHES Z, 1987, PATENT STATISTICS EC
- [8] Griliches Z., 1988, 2624 NAT BUR EC RES
- [10] JAFFE AB, 1986, AM ECON REV, V76, P984