@article{MZ_1928__27_167970,
     author = {E., Soh\"onhardt},
     title = {\"Uber konvexe {Polygone} in der {Ebene} der komplexen {Zahlen}},
     journal = {Mathematische Zeitschrift},
     pages = {138--145},
     publisher = {mathdoc},
     volume = {27},
     year = {1928},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1928__27_167970/}
}