%0 Journal Article %A Charles Swartz %T An Operator Characterization of Vector Measures which Have Radon-Nikodym Derivatives. %J Mathematische Annalen %D 1973 %P 77-84 %V 202 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1973__202_162402/ %F MAN_1973__202_162402