1. On the entropy of flows;Abramov;Dokl. Akad. Nauk. SSSR,1959
2. Periodic orbits for hyperbolic flows;Bowen;Amer. J. Math.,1972
3. The equidistribution of closed geodesics;Bowen;Amer. J. Math.,1972
4. Symbolic dynamics for hyperbolic flows;Bowen;Amer. J. Math.,1973
5. Equilibrium States and the Ergodic Theory of Anosov Diffeomorphisms;Bowen,1975