共 6 条
[1]
GRUBEL HG, 1968, AER DEC
[2]
LEE CH, 1969, JPE JUL
[3]
Markowitz H., 1971, PORTFOLIO SELECTION
[5]
SHARPE WF, 1965, J FINANC, V20, P412
[6]
TOBIN J, 1958, REV ECONOMIC STU FEB