@article{1143122387, author = {Atindogbe, C. and Ezin, J.-P. and Tossa, J.}, title = {Lightlike Einstein hypersurfaces in Lorentzian manifolds with constant curvature}, journal = {Kodai Math. J.}, volume = {29}, number = {1}, year = {2006}, pages = { 58-71}, language = {en}, url = {http://dml.mathdoc.fr/item/1143122387} }
Atindogbe, C.; Ezin, J.-P.; Tossa, J. Lightlike Einstein hypersurfaces in Lorentzian manifolds with constant curvature. Kodai Math. J., Tome 29 (2006) no. 1, pp. 58-71. http://gdmltest.u-ga.fr/item/1143122387/