1. Mandelbrot, B.B., Les Objects Fractals: Forme, Hasard et Dimension, Paris: Flammarion, 1975.
2. Feder, E., Fractals, New York: Plenum Press, 1988.
3. Fractals in Physics, Tosatti, E. and Pietronero, L., Eds., Amsterdam: North-Holland, 1986.
4. Roldugin, V.I., Usp. Khim., 2003, vol. 72, no. 10, p. 931.
5. Roldugin, V.I., Usp. Khim., 2003, vol. 72, no. 11, p. 1027.