%0 Journal Article %T On Ring Properties of Injective Hulls %J Canadian mathematical bulletin %D 1975 %P 233-239 %V 18 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-045-0/ %R 10.4153/CMB-1975-045-0 %F 10_4153_CMB_1975_045_0