@article{MOMA_1962__66_177175,
     author = {K. Prachar},
     title = {S\"atze \"uber quadratfreie {Zahlen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {306--312},
     publisher = {mathdoc},
     volume = {66},
     year = {1962},
     zbl = {0135.10301},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1962__66_177175/}
}