共 10 条
[7]
Accounting for Environmental Effects and Statistical Noise in Data Envelopment Analysis[J] . H. O. Fried,C. A. K. Lovell,S. S. Schmidt,S. Yaisawarng.Journal of Productivity Analysis . 2002 (1)
[8]
Patent Statistics as Economic Indicators: A Survey[J] . Zvi Griliches.Journal of Economic Literature . 1990 (4)
[9]
R & D Capital, Rate of Return on R & D Investment and Spillover of R & D in Japanese Manufacturing Industries[J] . The Review of Economics and Statistics . 1989 (4)
[10]
R & D and the Productivity Slowdown[J] . Zvi Griliches.The American Economic Review . 1980 (2)