%0 Journal Article
%A V. M. Millionshchikov
%T A~criterion for a small change in the direction of the solutions of a~linear system of differential equations as the result of small disturbances in the coefficients of the system
%J Matematičeskie zametki
%D 1968
%P 173-180
%V 4
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1968_4_2_a8/
%G ru
%F MZM_1968_4_2_a8