@article{CRMATH_2005__340_4_255_0,
     author = {Derbal, Abdallah},
     title = {Le nombre des diviseurs unitaires d'un entier dans les progressions arithm\'etiques},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {255--258},
     publisher = {Elsevier},
     volume = {340},
     number = {4},
     year = {2005},
     doi = {10.1016/j.crma.2004.12.002},
     language = {fr},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2004.12.002/}
}