1. The Direct Method in Soliton Theory;Hirota,2004
2. Solitons and Inverse Scattering Transform;Ablowitz,1981
3. The tanh method I: exact solutions of nonlinear evolution and wave equations;Malfliet;Phys. Scripta,1996
4. Backlund Transformation;Miura,1973
5. Symmetries and Differential Equations;Bluman,1989