@article{MZ_1968__104_170929,
     author = {Karl Zeller and W. Beekmann},
     title = {Singularit\"aten stetiger analytischer {Funktionen.}},
     journal = {Mathematische Zeitschrift},
     pages = {59--64},
     publisher = {mathdoc},
     volume = {104},
     year = {1968},
     zbl = {0164.37703},
     url = {http://geodesic.mathdoc.fr/item/MZ_1968__104_170929/}
}