%0 Journal Article %A Richard Taylor %A Fred Diamond %T Non-optimal levels of mod l modular representations. %J Inventiones mathematicae %D 1994 %P 435-462 %V 115 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1994__115_1_144177/ %F IM_1994__115_1_144177