Qm. Liu et As. Fokas, EXACT INTERACTION OF SOLITARY WAVES FOR CERTAIN NONINTEGRABLE EQUATIONS, Journal of mathematical physics, 37(1), 1996, pp. 324-345
Physically interesting exact solutions are constructed for a large cla
ss of nonlinear nonintegrable evolution equations. These solutions des
cribe the interaction of traveling waves. They exhibit rich phenomenol
ogy including breaking of solitary waves. Generalized conditional symm
etries and bilinearity are used to derive these exact results. (C) 199
6 American Institute of Physics.