TY - JOUR AU - Roman Sikorski TI - A few problems on Boolean algebras JO - Colloquium Mathematicum PY - 1963 SP - 25 EP - 28 VL - 11 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-11-1-25-28/ DO - 10.4064/cm-11-1-25-28 LA - en ID - 10_4064_cm_11_1_25_28 ER -