%0 Journal Article %A S.M. Goberstein %T Perfect completely semisimple inverse semigroups. %J Semigroup forum %D 1992 %P 395-397 %V 45 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1992__45_3_135201/ %F SF_1992__45_3_135201