1. Abram, D. (1996). The mechanical and the organic: Epistemological consequences of the Gaia hypothesis. In: Bunyard, P. (Ed.) Gaia in Action: Science of the Living Earth. Edinburgh: Floris, pp. 234–247.
2. Alix, J. -H., Hayes, D. (1983). Why are macromolecules modified post-synthetically? Biology of the Cell 47, 139–160.
3. Atlan, H., Koppel, M. (1990). The cellular computer DNA: Program or data? Bulletin of Mathematical Biology 52, 335–348.
4. Barnier, J. V., et al. (1995). The mouse B-raf gene encodes multiple protein isoforms with tissue-specific expression. Journal of Biological Chemistry 270, 23381–23389.
5. Bateson, G. (1988). Mind and Nature. A Necessary Unity. Toronto: Bantam.