Dokl. Akad. Nauk SSSR, 1987 Volume 295, Number 6,Pages 1347–1351(Mi dan7996)
MATHEMATICAL PHYSICS
Quasiclassical asymptotics in the problem of the scattering of
wave packets by a rapidly changing potential of the form $-2\vert
\nabla\Phi\vert ^2/{\rm ch}^2(\Phi (x)/h)+V_0(x)$