4[1]Markowitz H M.Portfolio selection[J].Joumal of Finance, 1952,7(1):77-9.1.
5[2]Markowitz H M.Portfolio Selection:Efficient Diversification of Investments[M].New York:Wiley,1959.
6[3]Merton R C. An analytic derivation of the efficient frontier[J]. J Finance and Quantitative Analysis 1972, (9):1851-1872.
7[4]Voros J. Portfolio analysg-analytic derivation of the efficient frontier[J]. EJOR. 1986,23: 294-300.
8[13]XIA Yu-sen, LIU Bao-ding, et al. A model for portfolio selection with order of expected returns[J]. Computers & Operations Research, 2000, (27) :409-422.
9Markowitz H M. Portfolio Selection Basil Blackwell, 1991.
