%0 Journal Article %A Stanisław Hartman %T A remark about Cauchy's equation %J Colloquium Mathematicum %D 1961 %P 77-79 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-8-1-77-79/ %R 10.4064/cm-8-1-77-79 %G en %F 10_4064_cm_8_1_77_79