TY  - JOUR
AU  - A. T. Fomenko
AU  - V. V. Vedyushkina
TI  - Singularities of integrable Liouville systems, reduction of integrals to lower degree and topological billiards: recent results
JO  - Theoretical and applied mechanics
PY  - 2019
SP  - 47 
EP  -  63
VL  - 46
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TAM_2019_46_1_a4/
ID  - TAM_2019_46_1_a4
ER  -