%0 Journal Article %A Franz Georg Timmesfeld %T Groups with Weakly Closed T I-subgroups. %J Mathematische Zeitschrift %D 1975 %P 243-278 %V 143 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1975__143_172232/ %F MZ_1975__143_172232