TY  - JOUR
AU  - A. B. Katok
TI  - Invariant measures of flows on oriented surfaces
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 775
EP  - 778
VL  - 211
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_211_4_a4/
LA  - ru
ID  - DAN_1973_211_4_a4
ER  -