@article{1077305204,
author = {Ash, Avner and Stevens, Glenn},
title = {Modular forms in characteristic $\ell$
and special values of their $L$
-functions},
journal = {Duke Math. J.},
volume = {53},
number = {1},
year = {1986},
pages = { 849-868},
language = {en},
url = {http://dml.mathdoc.fr/item/1077305204}
}
Ash, Avner; Stevens, Glenn. Modular forms in characteristic $\ell$
and special values of their $L$
-functions. Duke Math. J., Tome 53 (1986) no. 1, pp. 849-868. http://gdmltest.u-ga.fr/item/1077305204/