TY  - JOUR
AU  - N. I. Chernov
TI  - Topological entropy and periodic points of two-dimensional hyperbolic billiards
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1991
SP  - 50
EP  - 57
VL  - 25
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1991_25_1_a4/
LA  - ru
ID  - FAA_1991_25_1_a4
ER  -