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@article{DAN_1960_131_4_a9, author = {Ya. G. Sinai}, title = {Geodesic flows on manifolds of negative constant curvature}, journal = {Doklady Akademii Nauk}, pages = {752--755}, publisher = {mathdoc}, volume = {131}, number = {4}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a9/} }
Ya. G. Sinai. Geodesic flows on manifolds of negative constant curvature. Doklady Akademii Nauk, Tome 131 (1960) no. 4, pp. 752-755. http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a9/