@article{JRAM_1909__136_149309,
     author = {E. Busche},
     title = {Zur {Theorie} der {Funktionen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {39--57},
     publisher = {mathdoc},
     volume = {136},
     year = {1909},
     zbl = {40.0247.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1909__136_149309/}
}