%0 Journal Article %A M. Kuczma %T On monotonic solutions of a functional equation (I) %J Annales Polonici Mathematici %D 1960 %P 295-297 %V 9 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-9-3-295-297/ %R 10.4064/ap-9-3-295-297 %G en %F 10_4064_ap_9_3_295_297