%0 Journal Article
%A V. V. Zhikov
%T The stability and instability of Levinson's center
%J Differencialʹnye uravneniâ
%D 1972
%P 2167-2170
%V 8
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1972_8_12_a6/
%G ru
%F DE_1972_8_12_a6