%0 Journal Article
%A A. Yu. Levin
%T Some questions on the oscillation of solutions of linear differential equations
%J Doklady Akademii Nauk
%D 1963
%P 512-515
%V 148
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_148_3_a7/
%G ru
%F DAN_1963_148_3_a7