@article{RM_1968_23_4_a10,
     author = {L. D. Pustyl'nikov},
     title = {A~certain dynamical system},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1968},
     volume = {23},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1968_23_4_a10/}
}