@article{IM2_1988_30_1_a1,
     author = {D. V. Anosov},
     title = {On the behavior in the {Euclidean} or {Lobachevsky} plane of trajectories that cover trajectories of flows on closed {surfaces.~I}},
     journal = {Izvestiya. Mathematics },
     pages = {15--38},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1988_30_1_a1/}
}