@article{MAN_1893__43_157680,
     author = {A. Hurwitz},
     title = {Beweis der {Transcendenz} der {Zahl} e.},
     journal = {Mathematische Annalen},
     pages = {220--221},
     publisher = {mathdoc},
     volume = {43},
     year = {1893},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1893__43_157680/}
}