Stationary wave baems in strongly nonlinear three-dimensional and inhomogeneous medium

Asymptotics of stationary beams evolution in strongly nonlinear three-dimensional medium is obtained. Formulas for amplitude distribution, phase velocity and effeotivly solvable equations for axial line of the beam are found. It is proved that problems of determination of axial line and wave field, concentrated in a vicinity of this line are separated when the nonlinearity has degree form.