%0 Journal Article %A G. V. Vasil'eva %T On the problem of the perturbation of waves on a coastal sandbar %J Differencialʹnye uravneniâ %D 1978 %P 167-169 %V 14 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1978_14_1_a17/ %G ru %F DE_1978_14_1_a17