%0 Journal Article
%A A. Toraev
%T Criteria for oscillation and nonoscillation for elliptic equations
%J Differencialʹnye uravneniâ
%D 1985
%P 130-140
%V 21
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_1_a16/
%G ru
%F DE_1985_21_1_a16