%0 Journal Article %T Extended Centroids of Skew Polynomial Rings %J Canadian mathematical bulletin %D 1985 %P 67-76 %V 28 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1985-006-1/ %R 10.4153/CMB-1985-006-1 %F 10_4153_CMB_1985_006_1