Aa. Alexeyev, APPROXIMATING PSEUDOPOTENTIALS AND INVERSE SCATTERING PROBLEMS FOR PERTURBED NONLINEAR EQUATIONS, Physics letters. A, 177(3), 1993, pp. 203-210
A technique of approximating pseudopotentials is applied to find appro
ximate scattering problems for some nonlinear equations close to integ
rable ones, in particular for the well-known Burgers-Korteweg-de Vries
equation.