@article{CMH_1982__57_139907,
     author = {David Fried},
     title = {Flow equivalence, hyperbolic systems and a new zeta function for flows.},
     journal = {Commentarii mathematici Helvetici},
     pages = {237--259},
     publisher = {mathdoc},
     volume = {57},
     year = {1982},
     zbl = {0503.58026},
     url = {http://geodesic.mathdoc.fr/item/CMH_1982__57_139907/}
}