TY - JOUR AU - Conrad, Paul F. TI - The hulls of semiprime rings JO - Czechoslovak Mathematical Journal PY - 1978 SP - 59 EP - 86 VL - 28 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1978.101514/ DO - 10.21136/CMJ.1978.101514 LA - en ID - 10_21136_CMJ_1978_101514 ER -