@article{JRAM_1858__55_147730,
     author = {Paul Siebeck},
     title = {Ueber die graphische {Darstellung} imagin\"arer {Funktionen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {221--253},
     publisher = {mathdoc},
     volume = {55},
     year = {1858},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1858__55_147730/}
}