%0 Journal Article %A R. Beig %T TT-tensors and conformally flat structures on 3-manifolds %J Banach Center Publications %D 1997 %P 109-118 %V 41 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/-41-1-109-118/ %R 10.4064/-41-1-109-118 %G en %F 10_4064__41_1_109_118