%0 Journal Article %A Marek Kuczma %T Cauchy's functional equation on a restricted domain %J Colloquium Mathematicum %D 1973 %P 313-315 %V 28 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-28-2-313-315/ %R 10.4064/cm-28-2-313-315 %G en %F 10_4064_cm_28_2_313_315