@article{MZ_1927__26_167945,
     author = {K. Grandjot},
     title = {Untersuchungen \"uber {Dirichletsche} {Reihen}},
     journal = {Mathematische Zeitschrift},
     pages = {593--618},
     publisher = {mathdoc},
     volume = {26},
     year = {1927},
     zbl = {53.0310.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1927__26_167945/}
}