[1] GARDNER C S.Korteweg DeVires and Genralizations VI Method for Exact Solution [J].Comm. Pure Appl. Math.,1974,27:97-33.
[2] WEISS J.The Painleve Property for PDEs [J].J. Math. Phys.,1983,24:522-526. [3] HIROTA R.Exact Solution of the Kdv Equation for Multiple Collisioms of Solitoms [J].Phys. Rew. Lett.,1971,27:1 192-1 194.
[4] FAN E G.Extended Tanh-Function Method and Its Applications to Nonlinear Equations [J].Phys. Lett. A,2000,265:353.
[5] WANG M L.Solitary Wave Solutions for Variant Boussinesq Equations [J].Phys. Lett. A,1995,199:169.
[6] HUANG F,TANG X Y,LOU S Y.Exact Solutions for a Higher-Order Nonlinear Schrdinger Equation in Atmospheric Dynamics [J].Commum. Theor. Phys.,2006,45:573.
[7] HAYES C K.A New Travelling Wave Solutions of Fisher Equation with Density Dependent Diffusivity [J].J. of Math. Biology,1991,29:531-537.