TY - JOUR AU - C. Kuratowski TI - A~theorem on~ideals and some applications of it to the Baire property in Polish spaces JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1976 SP - 124 EP - 127 VL - 31 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1976_31_5_a10/ LA - en ID - RM_1976_31_5_a10 ER -