%0 Journal Article %A N. D. Kopachevskii %T The existence of surface waves in the problem on the normal oscillations of an ideal liquid rotating in a partially filled container %J Funkcionalʹnyj analiz i ego priloženiâ %D 1978 %P 84-85 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1978_12_2_a16/ %G ru %F FAA_1978_12_2_a16