%0 Journal Article %A Luigi Paganoni %A Stefania Paganoni Marzegalli %T Cauchy's functional equation on semigroups %J Fundamenta Mathematicae %D 1980 %P 63-74 %V 110 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-110-1-63-74/ %R 10.4064/fm-110-1-63-74 %G en %F 10_4064_fm_110_1_63_74