%0 Journal Article %A W. OkrasiƄski %T On a nonlinear ordinary differential equation %J Annales Polonici Mathematici %D 1988 %P 237-245 %V 49 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-49-3-237-245/ %R 10.4064/ap-49-3-237-245 %G en %F 10_4064_ap_49_3_237_245