%0 Journal Article %T W-Groups and Near-Ring Modules %J Canadian mathematical bulletin %D 1975 %P 241-244 %V 18 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-046-8/ %R 10.4153/CMB-1975-046-8 %F 10_4153_CMB_1975_046_8