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@article{MAN_1979__240_163233, author = {J. Bolton}, title = {Conditions under which a {Geodesic} {Flow} is {Anosov.}}, journal = {Mathematische Annalen}, pages = {103--114}, publisher = {mathdoc}, volume = {240}, year = {1979}, zbl = {0382.58017}, url = {http://geodesic.mathdoc.fr/item/MAN_1979__240_163233/} }
J. Bolton. Conditions under which a Geodesic Flow is Anosov.. Mathematische Annalen, Tome 240 (1979), pp. 103-114. http://geodesic.mathdoc.fr/item/MAN_1979__240_163233/