%0 Journal Article %A T.M.K. Davison %A Lothar Redlin %T HosszĂș's functional equation over rings generated by their units. (Short Communication). %J Aequationes mathematicae %D 1980 %P 318-318 %V 20 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1980__20_182406/ %F AM2_1980__20_182406