%0 Journal Article %A Goro Azumaya %T Characterizations of Semi-Perfect and Perfect Modules. %J Mathematische Zeitschrift %D 1974 %P 95-104 %V 140 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1974__140_172135/ %F MZ_1974__140_172135