1. W. Feller, An Introduction to Probability Theory and its Applications, Volume I, Chapter 14, Section 6 (J. Wiley, 1970).
2. See, for example, E. Presutti, Proceedings of the First Bernoulli Congress, September, 1986;
3. J. L. Lebowitz, Sixteenth IUPAP Conference on Statistical Mechanics, Boston University, August 11–16, 1986.
4. B. M. Boghosian, C. D. Levermore, Complex Systems, 1 (1987) 17.
5. See, for example, S. Wolfram, “Minimal Cellular Automaton Approximations to Continuum Systems”, in the proceedings of Cellular Automata’86, M.I.T., June, 1986; and