TY  - JOUR
AU  - A. B. Katok
TI  - Entropy and approximations of dynamical systems by periodic transformations
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1967
SP  - 75
EP  - 85
VL  - 1
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1967_1_1_a6/
LA  - ru
ID  - FAA_1967_1_1_a6
ER  -