1. Geodesic flows and closed Riemannian manifolds with negative curvature;Anosov,1967
2. ω-limit sets for Axiom A diffeomorphisms;Bowen;J. Differential Equations,1975
3. Pseudo-orbit shadowing in the family of tent maps;Coven,1986
4. Is every approximate trajectory of some process near an exact trajectory of a nearby process?;Husse,1986