@article{CMJ_2000__50_2_a11,
     author = {Bican, Ladislav},
     title = {Almost {Butler} groups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {367--378},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {2000},
     mrnumber = {1761394},
     zbl = {1051.20023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2000__50_2_a11/}
}