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@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/} }
A. V. Pogorelov. The rigidity of closed surfaces non-homeomorphic to a sphere in Riemannian space. Doklady Akademii Nauk, Tome 138 (1961) no. 1, pp. 51-52. http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a12/