1. Attractors in dynamical systems;Auslander;Bol. Soc. Mat. Mexicana,1964
2. Continuous Flows in the Plane;Beck,1974
3. Isolated invariant sets and isolating blocks;Conley;Trans. Amer. Math. Soc.,1971
4. Separatrix structure for elliptic flows;Elderkin;Amer. J. Math.,1975
5. Solitary invariant sets;Elderkin,1976