@article{JTNB_2000__12_2_571_0,
     author = {Vign\'eras, Marie-France},
     title = {Congruences modulo $\ell $ between $\epsilon $ factors for cuspidal representations of $GL(2)$},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {571--580},
     publisher = {Universit\'e Bordeaux I},
     volume = {12},
     number = {2},
     year = {2000},
     mrnumber = {1823203},
     zbl = {0974.11022},
     language = {en},
     url = {http://archive.numdam.org/item/JTNB_2000__12_2_571_0/}
}