@article{MZ_1936__41_168698,
     author = {A. Tonolo},
     title = {Zur {Integration} einer {Klasse} von {Systemen} linearer homogener partieller {Differentialgleichungen} erster {Ordnung}},
     journal = {Mathematische Zeitschrift},
     pages = {754--767},
     publisher = {mathdoc},
     volume = {41},
     year = {1936},
     zbl = {0015.11104},
     url = {http://geodesic.mathdoc.fr/item/MZ_1936__41_168698/}
}