TY - JOUR AU - Levene, R. H. TI - A Double Triangle Operator Algebra From SL 2(R+) JO - Canadian mathematical bulletin PY - 2006 SP - 117 EP - 126 VL - 49 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2006-012-3/ DO - 10.4153/CMB-2006-012-3 ID - 10_4153_CMB_2006_012_3 ER -