%0 Journal Article %A H. Światak %T A generalization of the Haruki functional equation %J Annales Polonici Mathematici %D 1969 %P 371-376 %V 22 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-22-3-371-376/ %R 10.4064/ap-22-3-371-376 %G en %F 10_4064_ap_22_3_371_376