TY  - JOUR
AU  - A. B. Katok
TI  - Winding numbers and $C$-flows
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1970
VL  - 25
IS  - 5
UR  - http://geodesic.mathdoc.fr/item/RM_1970_25_5_a16/
LA  - ru
ID  - RM_1970_25_5_a16
ER  -