References

1. M.J. Feigenbaum: "Universal Behavior in Nonlinear Systems":, Los Alamos Science, Summer (1980); this paper is also reprinted in "Universality in Chaos", by P. Cvitanovic (IOP Bristol, 1984).
2. E.N. Lorenz: "Deterministic Nonperiodic Flow", J. Atmos. Sci. 20, 130-41 (1963)
3. P. Collet and J.-P. Eckmann: "Iterated Maps on the Interval as Dynamical Systems", (Birkhauser, Boston 1980)
4. O.E. Lanford: "A Computer Assisted Proof of the Feigenbaum Conjectures", Bull. Am. Math. Soc. 6, 427 (1982)

General introductions are:

1. "Chaos: Making a New Science", by J. Gleick (Penguin, New York 1987)
2. D.R. Hofstadter: "Strange Attractors", Sci. Amer. 245, 22 (1981), also published in chapter 16 of his book "Metamagical Themas" (Basic Books, New York, 1985)

More technical discussions are:

1. "Universality in Chaos", by P. Cvitanovic (IOP Bristol, 1984).
2. "Deterministic Chaos", by H.G. Schuster (VCH, Weinheim, Germany,1995)
3. "Chaos in Dynamical Systems", by E.Ott (Cambridge 1993)