1. On Devaney's Definition of Chaos
2. R. L. Devaney, An introduction to chaotic dynamical systems, Benjamin/Cummings, Menlo Park, 1986.
3. Linear Chaos
4. B. B. Kennedy, A periodic solution with non-simple oscillation for an equation with state-dependent delay and strictly monontonic negative feedback, preprint.
5. B. Lani-Wayda, H.-O. Walther, Chaotic motion generated by delayed negative feedback, Part I: A transversality criterion, Differential Integral Equations 8(1995), No. 6, 1407--1452.