%0 Journal Article
%A S. E. Pustovoytov
%T Topological analysis of a~billiard in elliptic ring in a~potential field
%J Fundamentalʹnaâ i prikladnaâ matematika
%D 2019
%P 201-225
%V 22
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FPM_2019_22_6_a8/
%G ru
%F FPM_2019_22_6_a8