1. Bateson, Gregory (1972). Steps to an Ecology of Mind. New York, Ballantine Books.
2. Bateson, Gregory and Mary Catherine Bateson (1987). Angels Fear. Towards an Epistemology of the Sacred. New York, Macmillan.
3. Brooks, R. (1993). “A robot that Walks: Emergent Behaviors from a Carefully Evolved Network”. In A robot that Walks: Emergent Behaviors from a Carefully Evolved Network. R. Beer and et. al., Academic Press.
4. Bruni, Luis Emilio (2003). A Sign-Theoretic Approach to Biotechnology. Dissertation. Institute of Molecular Biology, University of Copenhagen. Copenhagen.
5. Buss, Leo (1987). The Evolution of Individuality. Princeton, Princeton University Press.