@article{IM2_1981_17_3_a0,
     author = {D. V. Anosov},
     title = {Certain homotopies in the space of closed curves},
     journal = {Izvestiya. Mathematics },
     pages = {423--453},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {1981},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1981_17_3_a0/}
}