1. Robustness in Ecosystems, SFI Robustness Site http://discuss.santafe.edu/robustness RS-2001-020.
2. Introduction to Applied Nonlinear Dynamical Systems and Chaos; Springer: New York, 1990.
3. ; Celestial Encounters; Princeton University Press: Princeton, NJ, 1996.
4. ; Robust unstable systems (private communication).
5. ; Principles and Parameters of Molecular Robustness. In: Robust Design; Ed.; Oxford University Press: New York, NY, 2004.