%0 Journal Article %A Wolfenstein, Samuel %T Semi-projectable $\ell$-groups %J Czechoslovak Mathematical Journal %D 1985 %P 385-390 %V 35 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1985.102028/ %R 10.21136/CMJ.1985.102028 %G en %F 10_21136_CMJ_1985_102028