@article{DAN_1962_144_4_a0,
     author = {V. I. Arnol'd and Ya. G. Sinai},
     title = {On small perturbations of the automorphisms of a torus},
     journal = {Doklady Akademii Nauk},
     pages = {695--698},
     year = {1962},
     volume = {144},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_144_4_a0/}
}