References

1

D. Gulick, ``Encounters with Chaos'' (McGraw Hill, Inc., New York, 1992), pp. 240--285.

2

P. Bergé, Y. Pomeau, and C. Vidal, ``Order Within Chaos; Towards a Deterministic Approach to Turbulence'' (John Wiley & Sons, New York, 1984), pp. 111--144, 301--324.

3

Ref. 1, pp. 127--186.

4

R. Devaney, ``A First Course in Chaotic Dynamical Systems'' (Addison--Wesley Publishing Company, Inc., New York, 1992), pp. 154--163.

5

Ref. 1, pp. 195--220.

6

H. Lauwerier, ``Fractals: Endlessly Repeating Geometrical Figures'' (Princeton University Press, Princeton, N. J., 1991), p. 136.

7

M. Tabor, ``Chaos and Integrability in Nonlinear Dynamics, An Introduction'' (John Wiley & Sons, New York, 1989), pp. 134--135, 163--167.

8

K. T. R. Davies and M. Baranger, to be published.