1. R. Devaney, An introduction to chaotic dynamical systems, 2nd. ed., Addison-Wesley, (1989).
2. S. N. Elaydi , Discrete chaos, with applications in science and engineering, 2nd. ed., Chapman and Hall/CRC, (2007).
3. R.L. Kraft, Chaos, Cantor sets, and Hyperbolicity for the Logistic Maps, The American Mathematical Monthly, vol.106, no.5, (1999), 400-408,
4. W. de Melo , S. van Strien, One-dimensional dynamics, Springer-Verlag, (1993).
)
