共 22 条
[3]
Bawa V. S., 1975, J FINANC ECON, V2, P95, DOI DOI 10.1016/0304-405X(75)90025-2
[5]
FAMA E, 1973, J POLITICAL EC JUN
[8]
HADAR J, 1969, AM ECON REV, V59, P25