TY - JOUR AU - J. Bell TI - Some propositions equivalent to the Sikorski Extension Theorem for Boolean algebras JO - Fundamenta Mathematicae PY - 1988 SP - 51 EP - 55 VL - 130 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-130-1-51-55/ DO - 10.4064/fm-130-1-51-55 LA - en ID - 10_4064_fm_130_1_51_55 ER -