%0 Journal Article
%A D. Willett
%T On the oscillatory behavior of the solutions of second order linear differential equations
%J Annales Polonici Mathematici
%D 1968
%P 175-194
%V 21
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap-21-2-175-194/
%R 10.4064/ap-21-2-175-194
%G en
%F 10_4064_ap_21_2_175_194