1. B.B. Mandelbrot: Fractals: Form, Chance and Dimension (Freeman, San Francisco 1977)
2. B.B. Mandelbrot: The Fractal Geometry of Nature (Freeman, San Francisco 1982)
3. H. Jones, in: Fractals and Chaos ,ed. by T. Crilly, R.A. Earschaw, H. Jones (Springer, New York 1991)
4. H.-O. Peitgen, H. Jürgens, D. Saupe: Chaos and Fractals (Springer Verlag, New York 1992)
5. J. Feder: Fractals (Plenum, New York 1988)