1. Solitons and the Inverse Scattering Transform;Ablowitz,1981
2. The relationship between Hamiltonian formalism of stationary and nonstationary problems;Bogoyavlenskii;Funct. Anal. Appl.,1976
3. Spectral Transform and Solitons;Calogero,1982
4. B. Dubrovin, Painlevé transcendents in two-dimensional topological field theory, Preprint SISSA 24/98/FM, in: Proceedings of 1996 Cargèse summer school “Painlevé Transcendents: One Century Later”
5. On the Hamiltonian property of an arbitrary evolution system on the set of stationary points of its integral;Mokhov;Comm. Moscow Math. Soc.,1983