@article{MAN_1886__26_157172,
     author = {K\"onigsberger},
     title = {Ueber die {Erniedrigung} der {Ordnung} einer {Differentialgleichung.}},
     journal = {Mathematische Annalen},
     pages = {110--116},
     publisher = {mathdoc},
     volume = {26},
     year = {1886},
     zbl = {17.0282.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1886__26_157172/}
}