%0 Journal Article %A Dłotko, Tadeusz %T Some records on second order differential equations %J Communications in Mathematics %D 1995 %P 21-26 %V 03 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/COMIM_1995__3_1_a1/ %G en %F COMIM_1995__3_1_a1