TY - JOUR AU - Chacrono, M. AU - Thierrin, G. TI - σ-Reflexive Semigroups and Rings JO - Canadian mathematical bulletin PY - 1972 SP - 185 EP - 188 VL - 15 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-033-3/ DO - 10.4153/CMB-1972-033-3 ID - 10_4153_CMB_1972_033_3 ER -