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二级参考文献6
1[2]D.G. Luenberger, Investment Science, Oxford University Press, 1998.
2[3]H.S.Rosen, Public Finance, Irwin McGraw- Hill, 1999.
3Au T,Au T P.Engineering economics for capital investment analysis[M].Allyn and Bacon,Inc.,1983.
4Luenberger D G.Investment science[M].New York,Oxford:Oxford University Press,1998.
5Rosen H S.Public finance[M].Irwin McGraw—Hill,1999.