%0 Journal Article %A D. Bobrowski %T Some properties of oscillatory solutions of certain differential equations of second order %J Commentationes Mathematicae %D 1968 %P 39-48 %V 11 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/cm.v11i1.5601/ %R 10.14708/cm.v11i1.5601 %G pl %F 10_14708_cm_v11i1_5601