@article{MAN_1973__202_162402,
     author = {Charles Swartz},
     title = {An {Operator} {Characterization} of {Vector} {Measures} which {Have} {Radon-Nikodym} {Derivatives.}},
     journal = {Mathematische Annalen},
     pages = {77--84},
     publisher = {mathdoc},
     volume = {202},
     year = {1973},
     zbl = {0236.46054},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__202_162402/}
}