%0 Journal Article %A C.F.K. Jung %A V. Boonyasombat %T On the functional equation f(x +f(y)) = f(x)f(y). %J Aequationes mathematicae %D 1976 %P 41-48 %V 14 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1976__14_136562/ %F AM2_1976__14_136562