TY - JOUR AU - Khosravi, Behrooz TI - On the prime graphs of the automorphism groups of sporadic simple groups JO - Archivum mathematicum PY - 2009 SP - 83 EP - 94 VL - 45 IS - 2 UR - http://geodesic.mathdoc.fr/item/ARM_2009_45_2_a1/ LA - en ID - ARM_2009_45_2_a1 ER -