共 11 条
[1]
AGRELL PJ, UNPUB J PRODUCTIVITY
[4]
BOGETOFT P, 1995, INT J PROD ECON, V39, P67, DOI 10.1016/0925-5273(94)00062-F
[9]
HART OD, 1987, ECON THEOR, P71
[10]
LAFFONT JJ, 1986, ECONOMETRICA, V56, P614