%0 Unpublished Work %A Branchereau, Romain %T An upper bound on the denominator of Eisenstein classes in Bianchi manifolds %J Annales de l'Institut Fourier %D 2025 %I Association des Annales de l’institut Fourier %Z Online first %R 10.5802/aif.3671 %G en %F AIF_0__0_0_A156_0