%0 Journal Article %A Chacron, M. %A Tignol, J.-P. %A Wadsworth, A. R. %T Tractable Fields %J Canadian journal of mathematics %D 1999 %P 10-25 %V 51 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1999-002-0/ %R 10.4153/CJM-1999-002-0 %F 10_4153_CJM_1999_002_0