TY - JOUR AU - Bell, Howard E. TI - A Commutativity Theorem for Near-Rings JO - Canadian mathematical bulletin PY - 1977 SP - 25 EP - 28 VL - 20 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1977-004-5/ DO - 10.4153/CMB-1977-004-5 ID - 10_4153_CMB_1977_004_5 ER -