@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/}
}