%0 Journal Article %A P. P. Zabreiko %T A theorem for semiadditive functionals %J Funkcionalʹnyj analiz i ego priloženiâ %D 1969 %P 86-88 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1969_3_1_a8/ %G ru %F FAA_1969_3_1_a8