@article{MAN_1901__54_158017,
     author = {Edmund Landau},
     title = {Ueber die asymptotischen {Werthe} einiger zahlentheoretischer {Functionen}},
     journal = {Mathematische Annalen},
     pages = {570--591},
     publisher = {mathdoc},
     volume = {54},
     year = {1901},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1901__54_158017/}
}