%0 Journal Article %A Jovan D. Kečkić %A V. LJ. Kocić %T Second Order Nonlinear Differential Equations Equivalent To Linear Differential Equations %J Publications de l'Institut Mathématique %D 1978 %P 99 %V _N_S_24 %N 38 %I mathdoc %U http://geodesic.mathdoc.fr/item/PIM_1978_N_S_24_38_a12/ %F PIM_1978_N_S_24_38_a12