@article{MOMA_1976__82_177785,
     author = {W. Fluch},
     title = {Notiz zu den quadratfreien {Zahlen} in arithmetischen {Progressionen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {269--274},
     publisher = {mathdoc},
     volume = {82},
     year = {1976},
     zbl = {0359.10033},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1976__82_177785/}
}