%0 Journal Article
%A Regenda, Ján
%T Oscillation criteria for differential equation $y\sp {(4)}+P(t)y''+R(t)y'+Q(t)y=0$
%J Mathematica slovaca
%D 1984
%P 419-425
%V 34
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MASLO_1984__34_4_a10/
%G en
%F MASLO_1984__34_4_a10