TY - JOUR AU - Birkenmeier, Gary AU - Heatherly, Henry TI - Medial rings and an associated radical JO - Czechoslovak Mathematical Journal PY - 1990 SP - 258 EP - 283 VL - 40 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1990.102379/ DO - 10.21136/CMJ.1990.102379 LA - en ID - 10_21136_CMJ_1990_102379 ER -