%0 Journal Article %A Z. Kowalski %T A difference method of solving the differential equation y' = h(t, y, y, y') %J Annales Polonici Mathematici %D 1964 %P 121-148 %V 16 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-16-2-121-148/ %R 10.4064/ap-16-2-121-148 %G en %F 10_4064_ap_16_2_121_148