@article{MZ_1919__4_167522,
     author = {E., Landau},
     title = {Zur {Theorie} der {Heckeschen} {Zetafunktionen,} welche komplexen {Charakteren} entsprechen},
     journal = {Mathematische Zeitschrift},
     pages = {152--162},
     publisher = {mathdoc},
     volume = {4},
     year = {1919},
     zbl = {47.0164.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1919__4_167522/}
}