@article{JRAM_1995__459_153688,
     author = {Yoichi Motohashi and Matti Jutila},
     title = {Mean value estimates for exponential sums and {L-functions:} a spectral theoretic approach.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {61--88},
     publisher = {mathdoc},
     volume = {459},
     year = {1995},
     zbl = {0809.11043},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1995__459_153688/}
}