TY - JOUR AU - Khan, Moharram A. TI - Commutativity of rings with constraints involving a subset JO - Czechoslovak Mathematical Journal PY - 2003 SP - 545 EP - 559 VL - 53 IS - 3 UR - http://geodesic.mathdoc.fr/item/CMJ_2003_53_3_a4/ LA - en ID - CMJ_2003_53_3_a4 ER -