1. Alderfer, C. P. (1972).Existence, Relatedness, and Growth, Free Press, New York.
2. Barash, D. (1979).The Whisperings Within, Harper & Row, New York.
3. Dawkins, R. (1976).The Selfish Gene, Oxford University Press, New York.
4. Járos, G. G., and Cloete, A. (1987). Biomatrix: The web of life.World Futures 23, 203–224.
5. Járos, G. G., and Cloete, A. (1990). The biomatrix: A web of purposeful processes or teleons. In Lasker, G. E. (ed.),Advances in Education and Human Development, Institute for Advanced Systems Research and Cybernetics, Windsor, Ontario, Canada, pp. 124–133.