TY - JOUR AU - D.P. Shukla AU - Shikha Yadav TI - Generalized Perfect Numbers JO - Commentationes Mathematicae PY - 2013 SP - 61 EP - 72 VL - 53 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v53i1.773/ DO - 10.14708/cm.v53i1.773 LA - pl ID - 10_14708_cm_v53i1_773 ER -