%0 Journal Article %A N. D. Kopachevsky %A D. O. Tsvetkov %T Small motions of an ideal stratified fluid in a~basin covered with ice %J Contemporary Mathematics. Fundamental Directions %D 2018 %P 573-590 %V 64 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2018_64_3_a4/ %G ru %F CMFD_2018_64_3_a4