TY - JOUR AU - Oukhaba, Hassan AU - Viguié, Stéphane TI - On the Gras Conjecture for Imaginary Quadratic Fields JO - Canadian mathematical bulletin PY - 2013 SP - 148 EP - 160 VL - 56 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-173-1/ DO - 10.4153/CMB-2011-173-1 ID - 10_4153_CMB_2011_173_1 ER -