%0 Journal Article %A Čadek, Martin %T Oscillatory properties of second order linear differential equations in the complex domain %J Commentationes Mathematicae Universitatis Carolinae %D 1989 %P 17-21 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1989__30_1_a1/ %G en %F CMUC_1989__30_1_a1