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@article{IM_1988__92_1_143582, author = {G. D'Ambra}, title = {Isometry groups of {Lorentz} manifolds.}, journal = {Inventiones mathematicae}, pages = {555--566}, publisher = {mathdoc}, volume = {92}, number = {1}, year = {1988}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM_1988__92_1_143582/} }
G. D'Ambra. Isometry groups of Lorentz manifolds.. Inventiones mathematicae, Tome 92 (1988) no. 1, pp. 555-566. http://geodesic.mathdoc.fr/item/IM_1988__92_1_143582/