%0 Journal Article %A S. V. Nesterov %T Natural frequencies of internal waves in a liquid with an arbitrary Brunt--V\"ais\"al\"a frequency %J Doklady Akademii Nauk %D 1983 %P 570-573 %V 271 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1983_271_3_a12/ %G ru %F DAN_1983_271_3_a12