TY - JOUR AU - Will, Pierre TI - Traces, Cross-Ratios and 2-Generator Subgroups of SU(2, 1) JO - Canadian journal of mathematics PY - 2009 SP - 1407 EP - 1436 VL - 61 IS - 6 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2009-067-6/ DO - 10.4153/CJM-2009-067-6 ID - 10_4153_CJM_2009_067_6 ER -