TY  - JOUR
AU  - S. E. Pustovoitov
TI  - Topological analysis of a~billiard bounded by confocal quadrics in a~potential field
JO  - Sbornik. Mathematics
PY  - 2021
SP  - 211
EP  - 233
VL  - 212
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2021_212_2_a3/
LA  - en
ID  - SM_2021_212_2_a3
ER  -