%0 Journal Article %A Holland, W. Charles %T Varieties of $l$-groups are torsion classes %J Czechoslovak Mathematical Journal %D 1979 %P 11-12 %V 29 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1979.101573/ %R 10.21136/CMJ.1979.101573 %G en %F 10_21136_CMJ_1979_101573