TY  - JOUR
AU  - A. N. Kirillov
AU  - R. V. Alkin
TI  - Stability of periodic billiard trajectories in triangle
JO  - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics
PY  - 2018
SP  - 25
EP  - 39
VL  - 18
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ISU_2018_18_1_a2/
LA  - ru
ID  - ISU_2018_18_1_a2
ER  -