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@article{PIM_1985_N_S_38_52_a20, author = {Hukum Singh}, title = {On the {Generalized} {Gauss} {Lemma} in {Lorentzian} {Manifolds}}, journal = {Publications de l'Institut Math\'ematique}, pages = {165 }, publisher = {mathdoc}, volume = {_N_S_38}, number = {52}, year = {1985}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PIM_1985_N_S_38_52_a20/} }
Hukum Singh. On the Generalized Gauss Lemma in Lorentzian Manifolds. Publications de l'Institut Mathématique, _N_S_38 (1985) no. 52, p. 165 . http://geodesic.mathdoc.fr/item/PIM_1985_N_S_38_52_a20/