@article{MZ_1940__46_168916,
     author = {A., Dinghas},
     title = {\"Uber positive harmonische {Funktionen} in einem {Halbraum}},
     journal = {Mathematische Zeitschrift},
     pages = {559--570},
     publisher = {mathdoc},
     volume = {46},
     year = {1940},
     zbl = {0023.14203},
     url = {http://geodesic.mathdoc.fr/item/MZ_1940__46_168916/}
}