TY - JOUR AU - A. Horn TI - On α-homomorphic images of α-rings of sets JO - Fundamenta Mathematicae PY - 1962 SP - 259 EP - 266 VL - 51 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-51-3-259-266/ DO - 10.4064/fm-51-3-259-266 LA - en ID - 10_4064_fm_51_3_259_266 ER -