%0 Journal Article
%A A. V. Zhevnyak
%T The direction vector method for investigating the stability of singular points of nonlinear systems. I. Theory
%J Differencialʹnye uravneniâ
%D 1985
%P 562-572
%V 21
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_4_a1/
%G ru
%F DE_1985_21_4_a1