@article{CMJ_2010__60_3_a1,
     author = {Ma, Rong and Yi, Yuan and Zhang, Yulong},
     title = {On the mean value of the generalized {Dirichlet} $L$-functions},
     journal = {Czechoslovak Mathematical Journal},
     pages = {597--620},
     publisher = {mathdoc},
     volume = {60},
     number = {3},
     year = {2010},
     mrnumber = {2672404},
     zbl = {1224.11077},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2010__60_3_a1/}
}