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@article{DAN_1961_136_3_a8, author = {Ya. G. Sinai}, title = {Geodesic flows on compact surfaces of negative curvature}, journal = {Doklady Akademii Nauk}, pages = {549--552}, publisher = {mathdoc}, volume = {136}, number = {3}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_136_3_a8/} }
Ya. G. Sinai. Geodesic flows on compact surfaces of negative curvature. Doklady Akademii Nauk, Tome 136 (1961) no. 3, pp. 549-552. http://geodesic.mathdoc.fr/item/DAN_1961_136_3_a8/