@article{JRAM_1897__117_149009,
     author = {F. Mertens},
     title = {Ueber {Multiplication} und {Nichtverschwinden} {Dirichletscher} {Reihen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {169--184},
     publisher = {mathdoc},
     volume = {117},
     year = {1897},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1897__117_149009/}
}