共 13 条
[3]
LUTTER R, 1999, UNPUB BENEFITS CLEAN
[4]
SHAPIRO C, 1984, AM ECON REV, V74, P433
[6]
SHOGREN JF, 2001, UNPUB SELF SELECTION
[7]
SHOGREN JF, 2002, UNPUB RISK PLEASURE
[9]
STAMLAND T, 2001, UNPUB INFORMATIVENES
[10]
THALER R, 1976, HOUSEHOLD PRODUCTION