%0 Journal Article %A Mankiewicz, Piotr %T Compact Groups of Operators on Subproportional Quotients of l 1 m %J Canadian journal of mathematics %D 2000 %P 999-1017 %V 52 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2000-042-8/ %R 10.4153/CJM-2000-042-8 %F 10_4153_CJM_2000_042_8