%0 Journal Article
%A K. Zima
%T A certain theorem on the oscillation of solutions of equation \((p(t)x')' + q(t)x = 0\)
%J Commentationes Mathematicae
%D 1979
%P  391-393
%V 21
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v21i2.5999/
%R 10.14708/cm.v21i2.5999
%G pl
%F 10_14708_cm_v21i2_5999