TY - JOUR AU - A. Kucia TI - On saturating ultrafilters on N JO - Colloquium Mathematicum PY - 1971 SP - 23 EP - 27 VL - 37 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-37-1-23-27/ DO - 10.4064/cm-37-1-23-27 LA - en ID - 10_4064_cm_37_1_23_27 ER -