%0 Journal Article
%A D. V. Izyumova
%A I. T. Kiguradze
%T Some remarks on the solutions of the equation $u''+a(t)f(u)=0$
%J Differencialʹnye uravneniâ
%D 1968
%P 589-605
%V 4
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1968_4_4_a1/
%G ru
%F DE_1968_4_4_a1