@article{MZ_1930__32_168255,
     author = {O. Perron},
     title = {Die {Stabilit\"atsfrage} bei {Differentialgleichungen}},
     journal = {Mathematische Zeitschrift},
     pages = {703--728},
     publisher = {mathdoc},
     volume = {32},
     year = {1930},
     zbl = {56.1040.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1930__32_168255/}
}