@article{GDZPPN002092972,
title = {A Non-Vanishing Theorem for Zeta Functions of GLn},
journal = {Inventiones mathematicae},
volume = {34},
year = {1976},
pages = {1-16},
zbl = {0349.12006},
url = {http://dml.mathdoc.fr/item/GDZPPN002092972}
}
Jacquet, H.; Shalika, J.A. A Non-Vanishing Theorem for Zeta Functions of GLn. Inventiones mathematicae, Tome 34 (1976) pp. 1-16. http://gdmltest.u-ga.fr/item/GDZPPN002092972/