%0 Journal Article %A Allen L. Shields %T An Analogue of a Hardy-Littlewood-Fejér Inequality for Upper Triangular Trace Class Operators. %J Mathematische Zeitschrift %D 1983 %P 473-484 %V 182 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1983__182_173297/ %F MZ_1983__182_173297