TY  - JOUR
AU  - D. V. Anosov
TI  - On the behavior in the Euclidean or Lobachevsky plane of trajectories that cover trajectories of flows on closed surfaces.~I
JO  - Izvestiya. Mathematics 
PY  - 1988
SP  - 15
EP  - 38
VL  - 30
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1988_30_1_a1/
LA  - en
ID  - IM2_1988_30_1_a1
ER  -