@article{DAN_1966_170_4_a10,
     author = {\`E. G. Poznyak},
     title = {Regular realization in the large of two-dimensional metrics of negative curavature},
     journal = {Doklady Akademii Nauk},
     pages = {786--789},
     publisher = {mathdoc},
     volume = {170},
     number = {4},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_170_4_a10/}
}