%0 Journal Article %A Zoltán Sasvári %T Additivity of Certain Functionals and the Construction of Invariant Integrals. %J Mathematische Annalen %D 1989 %P 573-582 %V 283 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1989__283_1_164528/ %F MAN_1989__283_1_164528