%0 Journal Article %A Bican, Ladislav %T Butler groups of infinite rank %J Czechoslovak Mathematical Journal %D 1994 %P 67-79 %V 44 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1994.128447/ %R 10.21136/CMJ.1994.128447 %G en %F 10_21136_CMJ_1994_128447