%0 Journal Article %A J. Kordylewski %T On the functional equation $F(x,φ(x), φ[f(x)],φ[f^2 (x)],...,φ[f^n(x)])=0$ %J Annales Polonici Mathematici %D 1960 %P 285-293 %V 9 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-9-3-285-293/ %R 10.4064/ap-9-3-285-293 %G en %F 10_4064_ap_9_3_285_293