1. Kruskal, M. D. 1974 The Korteweg-de Vries equation and related evolution equations.Lectures in Appl. Math. vol. 15. Nonlinear Wave Motion,pp.61–83.
2. Miles, J. W. 1977b Obliquely interacting solitary waves.J. Fluid Mech. 79,157–169.
3. Oikawa, M. & Yajima, N. 1973 Interactions of solitary waves - a perturbation approach to non-linear systems.J. Phys. Soc. Japan 34,1093–1099.
4. Keulegan, G. H. 1948 Gradual damping of solitary waves.Nat. Bur. Sci. J. Res. 40,487–498.
5. Miles, J. W. 1967 Surface-wave damping in closed basins.Proc. Roy. Soc. A297,459–475.