@article{CMJ_1999__49_3_a4,
     author = {Fuchs, L. and Viljoen, G.},
     title = {Valuated {Butler} groups of special type},
     journal = {Czechoslovak Mathematical Journal},
     pages = {507--516},
     publisher = {mathdoc},
     volume = {49},
     number = {3},
     year = {1999},
     mrnumber = {1708374},
     zbl = {1008.20047},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_1999__49_3_a4/}
}