@article{JRAM_1873__76_148222,
     author = {G. Frobenius},
     title = {Ueber den {Begriff} der {Irreductibilit\"at} in der {Theorie} der linearen {Differentialgleichungen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {236--270},
     publisher = {mathdoc},
     volume = {76},
     year = {1873},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1873__76_148222/}
}