@article{PIM_1984_N_S_35_49_a5,
     author = {A. Buys and G. K. Gerber},
     title = {The {Levitzki} {Radical} for {Omega-groups}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {49 },
     year = {1984},
     volume = {_N_S_35},
     number = {49},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1984_N_S_35_49_a5/}
}