@article{CMJ_1999_49_2_a10,
     author = {Parmenter, M. M.},
     title = {A remark on $k$-systems in groups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {347--349},
     year = {1999},
     volume = {49},
     number = {2},
     mrnumber = {1692532},
     zbl = {0955.20047},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_1999_49_2_a10/}
}