%0 Journal Article %A A. P. Markeev %T On Vibrations of a Heavy Material Point in a Fixed Ellipsoidal Bowl %J Russian journal of nonlinear dynamics %D 2024 %P 449-461 %V 20 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2024_20_4_a1/ %G en %F ND_2024_20_4_a1