@article{MZ_1939__44_168826,
     author = {A., Dinghas},
     title = {Eine {Bemerkung} zur {Ahlforsschen} {Theorie} der {\"Uberlagerungsfl\"achen}},
     journal = {Mathematische Zeitschrift},
     pages = {568--572},
     publisher = {mathdoc},
     volume = {44},
     year = {1939},
     zbl = {0019.42104},
     url = {http://geodesic.mathdoc.fr/item/MZ_1939__44_168826/}
}