@article{MS2_1956__4_165615,
     author = {SIGMUND SELBBRG},
     title = {\"Uber eine zahlentheoretische {Summe}},
     journal = {Mathematica Scandinavica},
     pages = {129--142},
     publisher = {mathdoc},
     volume = {4},
     year = {1956},
     zbl = {0070.04203},
     url = {http://geodesic.mathdoc.fr/item/MS2_1956__4_165615/}
}