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@article{IVM_1989_4_a2, author = {S. Kh. Arutyunyan}, title = {Some classes of submanifolds of the {pseudo-Euclidean} space $E^{n+1}_{2(n+1)}$}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {17--21}, publisher = {mathdoc}, number = {4}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1989_4_a2/} }
S. Kh. Arutyunyan. Some classes of submanifolds of the pseudo-Euclidean space $E^{n+1}_{2(n+1)}$. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1989), pp. 17-21. http://geodesic.mathdoc.fr/item/IVM_1989_4_a2/