TY - JOUR TI - Extended Centroids of Skew Polynomial Rings JO - Canadian mathematical bulletin PY - 1985 SP - 67 EP - 76 VL - 28 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1985-006-1/ DO - 10.4153/CMB-1985-006-1 ID - 10_4153_CMB_1985_006_1 ER -