%0 Journal Article
%A M. B. Kudaev
%T Nonoscillation and monotonicity of solutions of a differential
%J Doklady Akademii Nauk
%D 1991
%P 789-791
%V 320
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1991_320_4_a3/
%G ru
%F DAN_1991_320_4_a3