@article{MM2_1973__10_154194,
     author = {Ulrich Oppel},
     title = {Ein massentheoretisches {Marginalproblem.}},
     journal = {Manuscripta mathematica},
     pages = {359--378},
     publisher = {mathdoc},
     volume = {10},
     year = {1973},
     zbl = {0269.60029},
     url = {http://geodesic.mathdoc.fr/item/MM2_1973__10_154194/}
}