@article{GDZPPN002204576,
title = {Zeros on the critical line for Maass wave form L-functions.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {374},
year = {1987},
pages = {127-158},
zbl = {0603.10028},
url = {http://dml.mathdoc.fr/item/GDZPPN002204576}
}
Hafner, James Lee. Zeros on the critical line for Maass wave form L-functions.. Journal für die reine und angewandte Mathematik, Tome 374 (1987) pp. 127-158. http://gdmltest.u-ga.fr/item/GDZPPN002204576/