TY - JOUR AU - Préaux, Jean-Philippe TI - Group Extensions with Infinite Conjugacy Classes JO - Confluentes Mathematici PY - 2013 SP - 73 EP - 95 VL - 5 IS - 1 PB - Institut Camille Jordan UR - http://archive.numdam.org/articles/10.5802/cml.3/ DO - 10.5802/cml.3 LA - en ID - CML_2013__5_1_73_0 ER -