TY - JOUR AU - Alberto Facchini AU - Catia Parolin TI - Rings whose proper factors are right perfect JO - Colloquium Mathematicum PY - 2011 SP - 191 EP - 202 VL - 122 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm122-2-4/ DO - 10.4064/cm122-2-4 LA - en ID - 10_4064_cm122_2_4 ER -