Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1969__73_177481, author = {Richard Warlimont}, title = {On {Squarefree} {Numbers} in {Arithmetic} {Progressions.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {433--448}, publisher = {mathdoc}, volume = {73}, year = {1969}, zbl = {0213.33002}, url = {http://geodesic.mathdoc.fr/item/MOMA_1969__73_177481/} }
Richard Warlimont. On Squarefree Numbers in Arithmetic Progressions.. Monatshefte für Mathematik, Tome 73 (1969), pp. 433-448. http://geodesic.mathdoc.fr/item/MOMA_1969__73_177481/