%0 Journal Article
%A Yu. A. Mitropol'skii
%A A. M. Samoilenko
%A V. L. Kulik
%T Application of quadratic forms to the study of systems of linear differential equations
%J Differencialʹnye uravneniâ
%D 1985
%P 776-788
%V 21
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_5_a6/
%G ru
%F DE_1985_21_5_a6