%0 Journal Article %A Pl. Kannappan %A M. Kuczma %T On a functional equation related to the Cauchy equation %J Annales Polonici Mathematici %D 1974 %P 49-55 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-30-1-49-55/ %R 10.4064/ap-30-1-49-55 %G en %F 10_4064_ap_30_1_49_55