@article{PPN234736674+dmdlog136, title = {\S\ 111. Die Dirichletsche Grenzformel}, booktitle = {Lehrbuch der Algebra Bd. 3}, series = {GDML\_Books}, year = {1908}, pages = {402}, url = {http://dml.mathdoc.fr/item/PPN234736674+dmdlog136} }
(éd.). § 111. Die Dirichletsche Grenzformel, dans Lehrbuch der Algebra Bd. 3, GDML_Books, (1908), p. 402. http://gdmltest.u-ga.fr/item/PPN234736674+dmdlog136/