共 24 条
- [1] [Anonymous], J APPL ECONOMETRICS, DOI DOI 10.1002/JAE.3950010104
- [2] *BARR GUID COLL, 1990, BARR ED SER COLL DIV
- [3] BLANK RM, 1991, AM ECON REV, V81, P1041
- [5] Cartter A. M., 1966, ASSESSMENT QUALITY G
- [6] EKWURZEL D, 1985, J ECON LIT, V23, P1728
- [7] FERBER M, 1980, E ECON J, V63, P89
- [8] FISH M, 1989, J ECON EDUC, V1, P93