%0 Journal Article %A A. V. Kazhikhov %A V. V. Ragulin %T Nonstationary problems of ideal-fluid penetration through a bounded region %J Doklady Akademii Nauk %D 1980 %P 1344-1347 %V 250 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_250_6_a16/ %G ru %F DAN_1980_250_6_a16