TY  - JOUR
AU  - V. V. Vedyushkina
TI  - The Fomenko--Zieschang invariants of nonconvex topological billiards
JO  - Sbornik. Mathematics
PY  - 2019
SP  - 310
EP  - 363
VL  - 210
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2019_210_3_a1/
LA  - en
ID  - SM_2019_210_3_a1
ER  -