@article{DAN_1961_138_1_a12,
     author = {A. V. Pogorelov},
     title = {The rigidity of closed surfaces non-homeomorphic to a sphere in {Riemannian} space},
     journal = {Doklady Akademii Nauk},
     pages = {51--52},
     publisher = {mathdoc},
     volume = {138},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a12/}
}