%0 Journal Article %A B. N. Rumyantsev %T On Cauchy--Poisson waves in the presence of singularities of sink type at the beach edge %J Doklady Akademii Nauk %D 1989 %P 816-819 %V 305 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_305_4_a10/ %G ru %F DAN_1989_305_4_a10