1. Instability of dynamical systems with several degrees of freedom;Arnold;Soviet Math. Dokl.,1964
2. Isolated invariant sets in compact metric spaces;Churchill;J. Differential Equations,1972
3. Invariant sets which carry cohomology;Churchill;J. Differential Equations,1973
4. Flows near isolated invariant sets in dimension 3;Easton,1970
5. Isolating blocks and symbolic dynamics;Easton;J. Differential Equations,1975