%0 Journal Article %A Fredric D. Ancel %A %A %T Closed subgroups in Banach spaces %J Studia Mathematica %D 1994 %P 277-290 %V 109 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-109-3-277-290/ %R 10.4064/sm-109-3-277-290 %G en %F 10_4064_sm_109_3_277_290