TY - JOUR AU - Nicholson, W. K. TI - Local Group Rings JO - Canadian mathematical bulletin PY - 1972 SP - 137 EP - 138 VL - 15 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-025-1/ DO - 10.4153/CMB-1972-025-1 ID - 10_4153_CMB_1972_025_1 ER -