%0 Journal Article %A David Fried %T Flow equivalence, hyperbolic systems and a new zeta function for flows. %J Commentarii mathematici Helvetici %D 1982 %P 237-259 %V 57 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1982__57_139907/ %F CMH_1982__57_139907