%0 Journal Article
%A M. I. Lapachugina
%A G. A. Leonov
%T A frequency criterion for instability in the large of nonlinear dynamical systems
%J Differencialʹnye uravneniâ
%D 1989
%P 1451-1453
%V 25
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_8_a25/
%G ru
%F DE_1989_25_8_a25