%0 Journal Article %A Jürg Rätz %T On orthogonally additive mappings. (Short Communication). %J Aequationes mathematicae %D 1982 %P 317-318 %V 25 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1982__25_136976/ %F AM2_1982__25_136976