I.A.Molotkov
Analytical Methods in Nonlinear Wave Theory.
Pensoft Publishers, Sofia-Moscow, 2005

The book is devoted to the development and description of analytical methods
for this important branch of nonlinear physics - the theory of localized wave
processes. The application of each method described in the book is illustrated
by the solutions of concrete problems. The spectrum of these problems is very
wide. Among them are the following: propagation and self-action of powerful
wave beams in inhomogeneous media, propagation of intense acoustic beams,
ultrashort pulses in nonlinear graded-index light guides, waves in media with
internal structure, and long surface gravitational waves in fluids with variable
depth. These topics are treated in detail.