%0 Journal Article %A Gernot Stroth %T On 2-Groups with no Abelian Subgroups of Rank Four. %J Mathematische Zeitschrift %D 1975 %P 13-18 %V 144 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1975__144_172237/ %F MZ_1975__144_172237