%0 Journal Article %A Taft, Earl J. %T Cleft algebras with operator groups %J Portugaliae mathematica %D 1961 %P 195-198 %V 20 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1961__20_4_114863/ %G en %F PORMA_1961__20_4_114863