%0 Journal Article %A G. D'Ambra %T Isometry groups of Lorentz manifolds. %J Inventiones mathematicae %D 1988 %P 555-566 %V 92 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1988__92_1_143582/ %G en %F IM_1988__92_1_143582