@article{MZ_1956__64_169556,
     author = {Oskar Perron},
     title = {\"Uber {Potenzsummen.}},
     journal = {Mathematische Zeitschrift},
     pages = {103--114},
     year = {1956},
     volume = {64},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1956__64_169556/}
}