@article{MAN_1888__32_157393,
     author = {Ratner},
     title = {Ueber eine {Eigenschaft} gewisser linearer irreductibler {Differentialgleichungen}},
     journal = {Mathematische Annalen},
     pages = {566--582},
     publisher = {mathdoc},
     volume = {32},
     year = {1888},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1888__32_157393/}
}