%0 Journal Article %A Losey, Gerald %T Are One-Sided Inverses Two-Sided Inverses in a Matrix Ring Over a Group Ring? %J Canadian mathematical bulletin %D 1970 %P 475-479 %V 13 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-087-3/ %R 10.4153/CMB-1970-087-3 %F 10_4153_CMB_1970_087_3