%0 Journal Article %A Dias da Silva, J.A. %T On the closed left ideals of the group algebra $CS_n$ %J Portugaliae mathematica %D 1980 %P 441-453 %V 39 %N 1-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1980__39_1-4_115433/ %G en %F PORMA_1980__39_1-4_115433