1. Flaschka,H.,Relations between infinite-dimensional and finite-dimensional isospectral equations,Proc. RIMS Symp. on Nonlinear Integrable Systems,Kyoto,Japan,World Sci. Pub.,Singapore, 1983, 219–239
2. Ablowitz,M.J.,and Segur,H.,Solitons and the Inverse Scattering Transform,SIAM Studies in Appl. Math.,Philadelphia,1981.
3. Cao Cewen,A classical integrable system and the involutive represen-tation of solutions of the KdV equation.(preprint)
4. Moser,J.,Integrable Hamiltonian system and spectral theory,Proc. 1983 Beijing Symp. on Diff. Geom.and Diff.Equ’s,Science Press Beijing, 1986, 157–229.
5. Jaulent,M.,Miodek,I.,Lett. in Math. Phys.,1(1976)243–250