@inproceedings{karin2009compact, title={COMPACT LORENTZ MANIFOLDS WITH LOCAL SYMMETRY}, author={Karin Melnick}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160911175707166160759}, booktitle={Journal of Differential Geometry}, volume={81}, number={2}, pages={355-390}, year={2009}, }