%0 Journal Article
%A S. A. Vavilov
%A D. A. Ovsyannikov
%T Applicability of one-particle approximation in a problem of the evolution of beams of charged particles in a longitudinal magnetic field
%J Differencialʹnye uravneniâ
%D 1989
%P 1183-1187
%V 25
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_7_a11/
%G ru
%F DE_1989_25_7_a11