@article{01669220, title = {Homogeneous Lorentz manifolds with simple isometry group.}, journal = {Beitr\"age zur Algebra und Geometrie}, volume = {42}, year = {2001}, pages = {451-461}, zbl = {0998.53048}, language = {en}, url = {http://dml.mathdoc.fr/item/01669220} }
Witte, Dave. Homogeneous Lorentz manifolds with simple isometry group.. Beiträge zur Algebra und Geometrie, Tome 42 (2001) pp. 451-461. http://gdmltest.u-ga.fr/item/01669220/