1. Arnold, L. and Wihstutz, V. (eds) (1986) Lyapunov Exponents, Lecture Notes in Mathematics no. 1186. Springer-Verlag, Berlin.
2. Arnold, L., Crauel, H. and Eckmann, J.-P. (eds) (1991) Lyapunov Exponents, Lecture Notes in Mathematics no 1486. Springer-Verlag, Berlin.
3. Badii, R. and Politi, A. (1986) On the fractal dimension of filtered chaotic signals, in Dimensions and Entropies in Chaotic Systems (ed. G. Mayer-Kress). Springer-Verlag, Berlin, pp. 67–73.
4. Badii, R., Broggi, G., Derighetti, B., Ravani, M., Ciliberto, S., Politi, A. and Rubio, M. (1988) Dimension increase in filtered chaotic systems. Phys. Rev. Lett.,60, 979–82.
5. Barnsley, M. and Elton, J. (1988) A new class of Markov processes for image encoding. Adv. Appl. Prob.,20, 14–32.