@article{GDZPPN002064227,
title = {An asymptotic series for the mean value of Dirichlet L-functions.},
journal = {Commentarii mathematici Helvetici},
volume = {56},
year = {1981},
pages = {148-162},
zbl = {0457.10020},
url = {http://dml.mathdoc.fr/item/GDZPPN002064227}
}
Heath-Brown, D.R. An asymptotic series for the mean value of Dirichlet L-functions.. Commentarii mathematici Helvetici, Tome 56 (1981) pp. 148-162. http://gdmltest.u-ga.fr/item/GDZPPN002064227/