@article{articlee52acf4e,
title   = {Physics of psychophysics: stevens and weber-fechner laws are transfer functions of exitable media},
author = {Copelli, Mauro and Roque, Antônio Carlos and Oliveira, Rodrigo Freire and Kinouchi, Osame},
year = {2002},
doi = {10.1103/physreve.65.060901},
journal   = {Physical Review E}
}