1. Solitons: Nonlinear Evolution Equations and Inverse Scattering;Ablowitz,1991
2. Backlund Transformation;Miura,1978
3. Direct methods in soliton theory;Hirota,1980
4. Darboux Transformation in Solitons Theory and Geometry Applications;Gu,1999
5. Application of Lie Group to Differential Equation;Olver,1986