1. ‘Life Itself – a Comprehensive Inquiry into the Nature, Origin and Fabrication of Life’, Columbia University Press, New York, 1991.
2. in ‘Hunger Models: Computable Theory of Feeding Control’, Ed. D. A. Booth, Academic Press, London, 1978.
3. A. L. Goudsmit, ‘Towards a Negative Understanding of Psychotherapy’, Ph. D. Thesis, University of Groningen, 1998 (http://irs.ub.rug.nl/ppn/174290861).
4. ‘Essays on Life Itself’, Columbia University Press, New York, 2000, p. 74ff.
5. J. von Neumann, ‘The Theory of Self-Reproducing Automata’, Ed. A. W. Burks, University of Illinois Press, Urbana, IL, 1966, p. 101.