%0 Journal Article
%A A. Yu. Levin
%T On the stability of solutions of second-order equations
%J Doklady Akademii Nauk
%D 1961
%P 1298-1301
%V 141
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_141_6_a4/
%G ru
%F DAN_1961_141_6_a4