%0 Journal Article
%A N. A. Izobov
%T Stability with respect to the first approximation
%J Differencialʹnye uravneniâ
%D 1966
%P 898-907
%V 2
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1966_2_7_a3/
%G ru
%F DE_1966_2_7_a3