1. See, for example, R.J. Field and M. Burger (eds.),Oscillations and Traveling Waves in Chemical Systems, (Wiley, New York, 1986);
2. P. Berg�, Y. Pomeau and C. Vidal,Order Within Chaos (Wiley, New York, 1984);
3. G. Nicolis and F. Baras (eds.),Chemical Instabilities (Reidel, Dordrecht, 1984).
4. See, for example, P. Fife, in:Non-Equilibrium Dynamics in Chemical Systems, ed. C. Vidal and A. Pocault (Springer, Berlin. 1984), p. 76.
5. B. Halperin and P. Hohenberg, Rev. Mod, Phys. 49 (1977)435.