TY - JOUR AU - Enrico Leuzinger TI - On the trigonometry of symmetric spaces. JO - Commentarii mathematici Helvetici PY - 1992 SP - 252 EP - 286 VL - 67 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMH_1992__67_3_140268/ ID - CMH_1992__67_3_140268 ER -