@article{MZ_1959__71_169812,
     author = {Hans Petersson},
     title = {\"Uber {Darstellungsanzahlen} von {Primzahlen} durch {Quadratsummen.}},
     journal = {Mathematische Zeitschrift},
     pages = {289--307},
     publisher = {mathdoc},
     volume = {71},
     year = {1959},
     zbl = {0127.27304},
     url = {http://geodesic.mathdoc.fr/item/MZ_1959__71_169812/}
}