@article{10_21136_MB_1997_126146,
     author = {Jakub{\'\i}k, J\'an},
     title = {Closed convex $l$-subgroups and radical classes of convergence $l$-groups},
     journal = {Mathematica Bohemica},
     pages = {301--315},
     publisher = {mathdoc},
     volume = {122},
     number = {3},
     year = {1997},
     doi = {10.21136/MB.1997.126146},
     mrnumber = {1600660},
     zbl = {0897.06022},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/MB.1997.126146/}
}