@article{MZ_1924__20_167787,
     author = {E. Landau},
     title = {\"Uber die {...-Funktion} und die {L-Funktionen}},
     journal = {Mathematische Zeitschrift},
     pages = {105--125},
     publisher = {mathdoc},
     volume = {20},
     year = {1924},
     zbl = {50.0232.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1924__20_167787/}
}