Martínez Alonso, Luis2023-06-212023-06-2119850556-282110.1103/PhysRevD.32.1459https://hdl.handle.net/20.500.14352/65007©1985 The American Physical Society. This work was financially supported by the Comision Asesora de Investigacion Cientifica y Tecnica.The problem of the soliton motion in the case of a nonzero reflection coefficient is solved exactly within the framework of the inverse scattering method. A general method is given for obtaining the asymptotic expressions of the soliton angle variables. As illustrative examples of our procedure, we consider the Korteweg-de Vries equation and its higher analogs, the nonlinear Schrodinger equation, and the sine-Gordon equation.engjournal articlehttp://dx.doi.org/10.1103/PhysRevD.32.1459http://journals.aps.orgopen access51-73Astronomy & astrophysicsPhysicsParticles & fieldsFísica-Modelos matemáticosFísica matemática