%0 Journal Article
%A S. E. Pustovoitov
%T Topological analysis of a~billiard bounded by confocal quadrics in a~potential field
%J Sbornik. Mathematics
%D 2021
%P 211-233
%V 212
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2021_212_2_a3/
%G en
%F SM_2021_212_2_a3