%0 Journal Article %A Dahmen, Sander R. %A Yazdani, Soroosh %T Level Lowering Modulo Prime Powers and Twisted Fermat Equations %J Canadian journal of mathematics %D 2012 %P 282-300 %V 64 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2011-059-8/ %R 10.4153/CJM-2011-059-8 %F 10_4153_CJM_2011_059_8