%0 Journal Article
%A V. I. Zhukovskii
%T Instability and conditional stability in the critical case of $n$ zero roots
%J Differencialʹnye uravneniâ
%D 1965
%P 1601-1605
%V 1
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1965_1_12_a6/
%G ru
%F DE_1965_1_12_a6