@article{10_21136_CMJ_1979_101573,
     author = {Holland, W. Charles},
     title = {Varieties of $l$-groups are torsion classes},
     journal = {Czechoslovak Mathematical Journal},
     pages = {11--12},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {1979},
     doi = {10.21136/CMJ.1979.101573},
     mrnumber = {518135},
     zbl = {0432.06011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1979.101573/}
}