TY - JOUR AU - Lanski, Charles TI - Can a Semi-Prime Ring be a Finite Union of Right Annihilators? JO - Canadian mathematical bulletin PY - 1990 SP - 126 EP - 128 VL - 33 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-021-0/ DO - 10.4153/CMB-1990-021-0 ID - 10_4153_CMB_1990_021_0 ER -