1. D. Stauffer and A. Aharony, Introduction to Percolation Theory (Taylor and Francis, London, 1992).
2. G. Grimmett, Percolation and Disordered Systems (Springer-Verlag, Berlin, 1997).
3. M. Kleman and O. B. Lavrentovich, Soft Matter Physics: Introduction (Springer-Verlag, Berlin, 2003).
4. B. I. Shklovskii and A. L. Efros, Electronic Properties of Doped Semiconductors (Nauka, Moscow, 1979; Springer-Verlag, New York, 1984).
5. S. P. Friedman and N. A. Seaton, Transp. Porous Media 30, 241 (1998).