1. ‘Systems Thinking, Systems Practice’, J. Wiley & Sons, New York, 1999.
2. ‘Foundations of Complex-System Theories’, Cambridge University Press, Cambridge, 1998.
3. in ‘Systems Biology: Principles, Methods, and Concepts’, Ed. A. K. Konopka, CRC Press, Boca Raton, 2007, p. 1.
4. Information-theoretic computation complexity
5. , ‘Theory of Self-Reproducing Automata’, University of Illinois Press, Urbana, 1966.