§ 163. Die Dirichletschen Summen
Lehrbuch der Algebra Bd. 3, GDML_Books, (1908), p. 602 / Harvested from
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     title = {\S\ 163. Die Dirichletschen Summen},
     booktitle = {Lehrbuch der Algebra Bd. 3},
     series = {GDML\_Books},
     year = {1908},
     pages = {602},
     url = {http://dml.mathdoc.fr/item/PPN234736674+dmdlog197}
}

 (éd.). § 163. Die Dirichletschen Summen, dans Lehrbuch der Algebra Bd. 3, GDML_Books,  (1908), p. 602. http://gdmltest.u-ga.fr/item/PPN234736674+dmdlog197/