%0 Journal Article
%A M. A. Ivanov
%T The behavior of solutions of a perturbed homogeneous system of second-order differential equations
%J Differencialʹnye uravneniâ
%D 1989
%P 1810-1812
%V 25
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_10_a23/
%G ru
%F DE_1989_25_10_a23