TY  - JOUR
AU  - V. I. Arnol'd
TI  - One-dimensional cohomologies of Lie algebras of nondivergent vector fields and rotation numbers of dynamic systems
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1969
SP  - 77
EP  - 78
VL  - 3
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1969_3_4_a7/
LA  - ru
ID  - FAA_1969_3_4_a7
ER  -