%0 Journal Article
%A V. A. Kondratiev
%T On the oscillation of solutions of linear differential equations of the third and fourth order
%J Doklady Akademii Nauk
%D 1958
%P 22-24
%V 118
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1958_118_1_a4/
%G ru
%F DAN_1958_118_1_a4