@article{DAN_1960_133_6_a9,
     author = {Ya. G. Sinai},
     title = {The central limit theorem for geodesic flows on manifolds of constant negative curvature},
     journal = {Doklady Akademii Nauk},
     pages = {1303--1306},
     publisher = {mathdoc},
     volume = {133},
     number = {6},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_133_6_a9/}
}