%0 Journal Article %A Gian Luigi Forti %T Hyers-Ulam stability of functional equations in several variables. %J Aequationes mathematicae %D 1995 %P 143-190 %V 50 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1995__50_1-2_137624/ %F AM2_1995__50_1-2_137624