1. Aristotle, 1941. Aristotle. In: McKeon, R. (Ed.), Basic Works. Bantam Books, New York.
2. Objectification as an endo–exo transition;Atmanspacher,1994
3. Brooks, D.R., 2001. Evolution in the information age: rediscovering the nature of the organism. Semiotics, Evolution, Energy, Development 1 (1). Retrieved on June 2001 from http://www.library.utoronto.ca/see/SEED/Vol-1/Brooks-Journal.html.
4. Evolution as Entropy;Brooks,1986
5. The Spirit of the System;Burkhardt,1977