1. Combinatorial Dynamics and Entropy in Dimension One;Alseda,1993
2. Topological classification of flows on closed two-dimensional manifolds;Aranson;Russ. Math. Surveys,1986
3. Geometrical Methods in the Theory of Ordinary Differential Equations;Arnol'd,1988
4. Unremovable closed orbits;Asimov,1983
5. Filtrations and periodic data on surfaces;Batterson;Amer. J. Math.,1986