TY  - JOUR
AU  - V. I. Arnol'd
TI  - Remarks on the Morse theory of a~divergence-free vector field, the averaging method, and the motion of a~charged particle in a~magnetic field
JO  - Informatics and Automation
PY  - 1997
SP  - 9
EP  - 19
VL  - 216
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1997_216_a1/
LA  - ru
ID  - TRSPY_1997_216_a1
ER  -