1. Frauenfelder, H., A. R. Bishop, A. Garcia, A. Perelson, P. Shuster, D. Sherrington and P. J. Swart, eds. (1997). Landscape Paradigms in Physics and Biology (Special issue of Physica D, Vol. 107, no. 2/4), Elsevier, Amsterdam.
2. Kauffman, S.A., The Origins of Order (Oxford University Press, Oxford 1993).
3. Lacks, D. J., Phys. Rev. Lett., 80, 5385–5388 (1998).
4. Lacks, D. J., Phys. Rev. Lett., 84, 4629–4632 (2000).
5. Lacks, D. J., J. Theor. Bio., 209, 5385–5388 (2001).