@article{CRMATH_2006__342_11_803_0,
     author = {Derbal, Abdallah},
     title = {La somme des diviseurs unitaires d'un entier dans les progressions arithm\'etiques $ ({\sigma }_{k,l}^{*}(n))$},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {803--806},
     publisher = {Elsevier},
     volume = {342},
     number = {11},
     year = {2006},
     doi = {10.1016/j.crma.2006.03.022},
     language = {fr},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2006.03.022/}
}