TY - JOUR AU - Exel, Ruy TI - Hankel Matrices Over Right Ordered Amenable Groups JO - Canadian mathematical bulletin PY - 1990 SP - 404 EP - 415 VL - 33 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-066-2/ DO - 10.4153/CMB-1990-066-2 ID - 10_4153_CMB_1990_066_2 ER -