%0 Journal Article %A Franz Halter-Koch %A Ludwig Reich %T On products of additive functions. %J Aequationes mathematicae %D 1993 %P 83-88 %V 45 %N 2-3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1993__45_2-3_137509/ %F AM2_1993__45_2-3_137509