@article{GDZPPN002111640,
title = {Non-optimal levels of mod l modular representations.},
journal = {Inventiones mathematicae},
volume = {115},
year = {1994},
pages = {435-462},
zbl = {0847.11025},
url = {http://dml.mathdoc.fr/item/GDZPPN002111640}
}
Taylor, Richard; Diamond, Fred. Non-optimal levels of mod l modular representations.. Inventiones mathematicae, Tome 115 (1994) pp. 435-462. http://gdmltest.u-ga.fr/item/GDZPPN002111640/