@article{MZ_1940__46_168891,
     author = {G., Aumann},
     title = {Die {Mittelpunktsverzerrung} bei konvexen konformen {Abbildungen}},
     journal = {Mathematische Zeitschrift},
     pages = {80--82},
     publisher = {mathdoc},
     volume = {46},
     year = {1940},
     zbl = {0022.15101},
     url = {http://geodesic.mathdoc.fr/item/MZ_1940__46_168891/}
}