@article{DAN_1976_230_4_a6,
     author = {Yu. S. Osipov},
     title = {Structural stability of noncompact {Anosov} flows and hyperbolic motions in {Kepler's} problem},
     journal = {Doklady Akademii Nauk},
     pages = {777--780},
     publisher = {mathdoc},
     volume = {230},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_230_4_a6/}
}