%0 Journal Article %A P. Kranz %T Additive functionals on abelian semigroups %J Commentationes Mathematicae %D 1972 %P 239-246 %V 16 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/cm.v16i1.5740/ %R 10.14708/cm.v16i1.5740 %G pl %F 10_14708_cm_v16i1_5740