1. ] Schuster, H.G.(1988) ‘Deterministic Chaos - An Introduction’, Weinheim, Physik-Verlag.
2. Crutchfield, J.P. and Kaneko, K. (1987) ‘Phenomenon of Spatio-temporal Chaos’ in ‘Directions in Chaos’, Hao Bai-Lin(ed), World Scientific, Singapore.
3. cf. also Jaroszewicz, A. and Sukiennicki, A., Phys. Rev. B, to be published in 1991.
4. Overman, E.A., Maclaughin, D.W., Bishop, A.R. (1986) Phys. 19D, 1.
5. cf. Swinney, L. (1983) Physica 7D,1.