%0 Journal Article %A Stewart, Patrick N. %T Projective Socles %J Canadian mathematical bulletin %D 1989 %P 498-499 %V 32 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1989-073-1/ %R 10.4153/CMB-1989-073-1 %F 10_4153_CMB_1989_073_1