1. Korteweg, D. J. and de Vries, G.: On the change of form of long waves advancing in a rectangular canal, and on a new type of long stationary waves,Phil. Mag. 39 (1895), 422?443.
2. Gardner, C. S., Greene, J. M., Kruskal, M. D., and Miura, R. ML: Method for solving the Korteweg-de Vries equation,Phys. Rev. Lett. 19 (1967), 1095?1097.
3. Zakharov, V. E. and Shabat, A. B.: Exact theory of two-dimensional self-focusing and one-dimensional self-modulation of waves in nonlinear media,Soviet Physics JETP 34 (1972), 62?69.
4. Ablowitz, M. J., Kaup, D. J., Newell, A. C., and Segur, H.: The inverse scattering transform-Fourier analysis for nonlinear problems,Stud. Appl. Math. 53 (1974), 249?315.
5. Zakharov, V. E., Takhtadzjan, L. A. and Faddeev, L. D.: A complete description of the solution of the sine-Gordon equation,Soviet Phys. Dokl. 19 (1975), 824?826.