%0 Journal Article %A P. E. Krasnushkin %T The interaction of modulated normal waves %J Doklady Akademii Nauk %D 1978 %P 815-818 %V 239 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_239_4_a16/ %G ru %F DAN_1978_239_4_a16