@article{MAN_1888__31_157340,
     author = {Busche},
     title = {Ueber die {Euler'sche} ... - {Function}},
     journal = {Mathematische Annalen},
     pages = {70--74},
     publisher = {mathdoc},
     volume = {31},
     year = {1888},
     zbl = {20.0183.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1888__31_157340/}
}