%0 Journal Article
%A A. Lundberg
%T On the functional equation f(...(x) + g(y)) = ...(x) * h(x+y).
%J Aequationes mathematicae
%D 1977
%P 21-30
%V 16
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1977__16_136671/
%F AM2_1977__16_136671