@article{MZ_1967__102_170879,
     author = {Wolfgang Beekmann},
     title = {Wirkfelder von {Integralverfahren.}},
     journal = {Mathematische Zeitschrift},
     pages = {323--336},
     publisher = {mathdoc},
     volume = {102},
     year = {1967},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__102_170879/}
}