TY  - JOUR
AU  - I. F. Kobtsev
TI  - An elliptic billiard in a~potential force field: classification of motions, topological analysis
JO  - Sbornik. Mathematics
PY  - 2020
SP  - 987
EP  - 1013
VL  - 211
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2020_211_7_a4/
LA  - en
ID  - SM_2020_211_7_a4
ER  -