TY - JOUR AU - Marek Balcerzak TI - On c-sets and products of ideals JO - Colloquium Mathematicum PY - 1991 SP - 1 EP - 6 VL - 62 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-62-1-1-6/ DO - 10.4064/cm-62-1-1-6 LA - en ID - 10_4064_cm_62_1_1_6 ER -