%0 Journal Article %A N. R. Sibgatullin %T On the theory of narrow-band wave packets on a free surface %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1991 %P 70-75 %N 6 %U http://geodesic.mathdoc.fr/item/VMUMM_1991_6_a13/ %G ru %F VMUMM_1991_6_a13