1. Round handles and non-singular Morse-Smale flows;Asimov;Ann. of Math.,1979
2. One dimensional hyperbolic sets for flows;Bowen;J. Differential Equations,1972
3. Homology for zero dimensional basic sets;Bowen;Ann. of Math.,1977
4. Isolated invariant sets and the Morse index;Conley,1978
5. Hyperbolicity and chain recurrence;Franke;J. Differential Equations,1977