TY - JOUR AU - Keys, David C. TI - $L$-indistinguishability and $R$-groups for quasisplit groups : unitary groups in even dimension JO - Annales scientifiques de l'École Normale Supérieure PY - 1987 SP - 31 EP - 64 VL - 20 IS - 1 PB - Elsevier UR - http://archive.numdam.org/articles/10.24033/asens.1523/ DO - 10.24033/asens.1523 LA - en ID - ASENS_1987_4_20_1_31_0 ER -