1. Solitons, Nonlinear Evolution Equations and Inverse Scattering;Ablowitz,1991
2. Darboux Transformations and Solitons;Matveev,1991
3. Bäcklund and Darboux Transformations: Geometry and Modern Applications in Soliton Theory;Rogers,2002
4. Bäcklund Transformations and Their Applications;Rogers,1982
5. Bäcklund Transformation;Miura,1978