%0 Journal Article
%A V. I. Arnol'd
%T 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
%J Informatics and Automation
%D 1997
%P 9-19
%V 216
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1997_216_a1/
%G ru
%F TRSPY_1997_216_a1