%0 Journal Article %A Z. Krzeszowiak %T On differentiable solutions of the functional equation φ(f(x)) = g(x, φ(x)) for vector-valued functions %J Annales Polonici Mathematici %D 1972 %P 121-128 %V 27 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-27-2-121-128/ %R 10.4064/ap-27-2-121-128 %G en %F 10_4064_ap_27_2_121_128