@article{MAN_1892__40_157603,
     author = {J. Horn},
     title = {Zur {Theorie} der {Systeme} linearer {Differentialgleichungen} mit einer unabh\"angigen {Ver\"anderlichen.} {II.}},
     journal = {Mathematische Annalen},
     pages = {527--550},
     year = {1892},
     volume = {40},
     zbl = {24.0315.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1892__40_157603/}
}