共 26 条
[1]
Bresnahan T. F, 1989, HDB IND ORG, VII
[3]
ELTON EG, 1991, MODERN PORTFOLIO THE
[4]
GORDON RL, 1979, ADVERTISING AGE, V50, P3
[6]
Greene W. H., 1993, ECONOMETRIC ANAL
[8]
HOGG RV, 1978, INTRO MATH STATISTIC
[9]
Johnston J., 1984, ECONOMETRIC METHODS