1)Kennedy, Judy; Koçak, Sahin; Yorke, James A. 
  A chaos lemma. Amer. Math. Monthly 108 (2001), no. 5, 411--423. 

2)Sweet, David; Ott, Edward; Yorke, James A. 
Topology in chaotic scattering. Nature 399 (1999), no. 6734, 315--316.

3) Fractals Vol. 3 1995, 641-650.

4)Bau-Sen Du, A Simple Proof of Sharkovsky's Theorem.
  American Mathematical Monthly August-September, 2004.

5)Robert S. Strichartz, Evaluating Integrals Using Self-Similarity.
  American Mathematical Monthly April, 2000.

6)Michael Frame, Brenda Johnson, and Jim Sauerberg, Fixed Points and Fermat:
 A Dynamical Systems Approach to Number Theory.
 American Mathematical Monthly May, 2000.

7) Reid Barton and Keith Burns, A Simple Special Case of Sharkovskii's Theorem
 American Mathematical Monthly December, 2000.

8) Robert L. Devaney, The Mandelbrot Set, the Farey Tree, and the Fibonacci
 Sequence. American Mathematical Monthly April, 1999.

9)Roger L. Kraft, Chaos, Cantor Sets, and Hyperbolicity for the Logistic Maps
 American Mathematical Monthly May, 1999.

10)John H. Hubbard, The Forced Damped Pendulum: Chaos, Complication, and 
  Control, American Mathematical Monthly October, 1999.

11) June Barrow-Green, Poincaré and the Three Body Problem. 
American Mathematical Monthly December, 1999.

12) Susan Bassein, The Dynamics of a Family of One-Dimensional Maps
American Mathematical Monthly February, 1998.

13) Marc Frantz, Two Functions Whose Powers Make Fractals
American Mathematical Monthly August/September, 1998.