@article{MZ_1929__29_168083,
     author = {E. Landau},
     title = {\"Uber die {Irreduzibilit\"at} der {Kreisteilungsgleichung.}},
     journal = {Mathematische Zeitschrift},
     pages = {462--462},
     publisher = {mathdoc},
     volume = {29},
     year = {1929},
     zbl = {54.0123.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1929__29_168083/}
}