@article{DAN_1991_320_4_a1,
     author = {A. A. Klyachin and V. M. Miklyukov},
     title = {Space-like hypersurfaces and a problem on the continuation of a},
     journal = {Doklady Akademii Nauk},
     pages = {781--784},
     publisher = {mathdoc},
     volume = {320},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_320_4_a1/}
}