%0 Journal Article %A Olejček, Vladimír %T Ultrafilters and Darboux property of finitely additive measure %J Mathematica slovaca %D 1981 %P 263-276 %V 31 %N 3 %U http://geodesic.mathdoc.fr/item/MASLO_1981_31_3_a4/ %G en %F MASLO_1981_31_3_a4