@article{MZ_1930__31_168198,
     author = {B. Amir\`a},
     title = {Maximalbetrag und {Maximalglied} {Dirichletscher} {Reihen}},
     journal = {Mathematische Zeitschrift},
     pages = {594--600},
     publisher = {mathdoc},
     volume = {31},
     year = {1930},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1930__31_168198/}
}