TY - JOUR AU - Chacron, M. TI - C-Valuations and Normal C-Orderings JO - Canadian journal of mathematics PY - 1989 SP - 14 EP - 67 VL - 41 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1989-002-6/ DO - 10.4153/CJM-1989-002-6 ID - 10_4153_CJM_1989_002_6 ER -