@article{IM2_1988_30_2_a12,
     author = {I. A. Taimanov},
     title = {Topological obstructions to integrability of geodesic flows on non-simply-connected manifolds},
     journal = {Izvestiya. Mathematics },
     pages = {403--409},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1988_30_2_a12/}
}