@article{DAN_1994_336_4_a2,
     author = {N. V. Loseva},
     title = {Some properties of saddle hypersurfaces of tubular type},
     journal = {Doklady Akademii Nauk},
     pages = {444--445},
     publisher = {mathdoc},
     volume = {336},
     number = {4},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_336_4_a2/}
}