%0 Journal Article %A V. R. Kudashev %A B. I. Suleimanov %T Small-amplitude dispersion oscillations on the background of the nonlinear geometric optic approximation %J Teoretičeskaâ i matematičeskaâ fizika %D 1999 %P 413-422 %V 118 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1999_118_3_a11/ %G ru %F TMF_1999_118_3_a11