1. The Direct Method in Soliton Theory;Hirota,2004
2. Bilinear Transformation Method;Matsuno,1984
3. Solitons and the Inverse Scattering Transform;Ablowitz,1981
4. Solitons in Mathematics and Physics;Newell,1985
5. Theory of Solitons, The Inverse Scattering Methods;Novikov,1984