TY - JOUR AU - Olejček, Vladimír TI - Ultrafilters and Darboux property of finitely additive measure JO - Mathematica slovaca PY - 1981 SP - 263 EP - 276 VL - 31 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1981__31_3_a4/ LA - en ID - MASLO_1981__31_3_a4 ER -