@article{JRAM_1917__147_149458,
     author = {Oskar Perron},
     title = {\"Uber {Systeme} von linearen {Differenzengleichungen} erster {Ordnung.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {36--53},
     publisher = {mathdoc},
     volume = {147},
     year = {1917},
     zbl = {46.0706.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1917__147_149458/}
}