@article{IVM_1970_4_a7,
     author = {A. N. Livshits},
     title = {Periodic trajectories of automorphisms of the torus, and approximation of invariant measures},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {64--66},
     publisher = {mathdoc},
     number = {4},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1970_4_a7/}
}