共 22 条
[2]
BELSLEY DA, 1980, REGRESSION IDENTIFYI
[3]
*CATTL FAX, 1992, EC TRAD BETW QUAL GR
[5]
ESPINOSA JA, 1991, WESTERN J AGR ECON, V16, P72
[6]
Griliches Z., 1971, PRICE INDEXES QUALIT
[7]
HANNEMAN WM, 1982, NEW DIRECTIONS ECONO
[8]
JOHNSON DG, 1989, 1 U MINN HUMPHR I RE