Bibliografia

( ) P. Bak, How nature works, (Copernicus, New York) 1999.
( ) M. Sahimi, Applications of Percolation Theory, (CRC Press, London) 1994
( ) D. Stauffer e A. Aharony, Introduction to Percolation Theory, (CRC Press, London) 1994
( ) K. Christensen e N.R. Moloney, Complexity and Criticality, (Imperial College Press, London) 2005