1. The direct method in soliton theory;Hirota,2004
2. Leçons sur la Théorie des Surfaces;Darboux,1915
3. Zakharov V.E., Manakov S.V., Novikov S.P., Pitaevskiĭ L.P. Theory of solitons: the inverse scattering method. New York: Consultants Bureau; 1984. Dodd R.K., Eilbeck J.C., Gibbon J., Morris H.C., Solitons and nonlinear wave equations. New-York: Academic; 1982.
4. Prolongation structures of nonlinear evolution equations
5. Nonlinear-Evolution Equations of Physical Significance