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@article{DAN_1979_247_1_a3, author = {V. L. Gurevich}, title = {Two-dimensional manifolds of bounded curvature}, journal = {Doklady Akademii Nauk}, pages = {22--25}, publisher = {mathdoc}, volume = {247}, number = {1}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_247_1_a3/} }
V. L. Gurevich. Two-dimensional manifolds of bounded curvature. Doklady Akademii Nauk, Tome 247 (1979) no. 1, pp. 22-25. http://geodesic.mathdoc.fr/item/DAN_1979_247_1_a3/