@article{MAN_1875__8_156669,
     author = {Frahm},
     title = {Ueber gewisse {Differentialgleichungen}},
     journal = {Mathematische Annalen},
     pages = {35--44},
     publisher = {mathdoc},
     volume = {8},
     year = {1875},
     url = {http://geodesic.mathdoc.fr/item/MAN_1875__8_156669/}
}