1. Solitons, Nonlinear Evolution Equations and Inverse Scattering;Ablowitz,1991
2. Theory of Solitons, the Inverse Scattering Methods;Novikov,1984
3. Bilinear Transformation Method;Matsuno,1984
4. Darboux Transformations and Solitons;Matveev,1991
5. Algebro-Geometric Approach to Nonlinear Integrable Equations;Belokolos,1994