@article{MAN_1898__50_157898,
     author = {J. Horn},
     title = {Ueber eine {Classe} linearer {Differentialgleichungen.} {(Erster} {Aufsatz)}},
     journal = {Mathematische Annalen},
     pages = {525--556},
     year = {1898},
     volume = {50},
     zbl = {29.0270.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1898__50_157898/}
}