%0 Journal Article %A Chacron, M. %T C-Valuations and Normal C-Orderings %J Canadian journal of mathematics %D 1989 %P 14-67 %V 41 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1989-002-6/ %R 10.4153/CJM-1989-002-6 %F 10_4153_CJM_1989_002_6