Universal scaling of forest fire propagation
  In this paper we use a variant of the Watts-Strogatz small-world model to predict wildfire behavior near the critical propagation/nonpropagation threshold. We find that forest fire patterns are fractal and that critical exponents are universal, which suggests that the propagation/nonpropagation transition is a second-order transition. Universality tells us that the characteristic critical behaviour of propagation in real (amorphous) forest landscapes can be extracted from the simplest network model. 
Porterie Bernard, Kaiss Ahmed, Clerc Jean Pierre, Zekri Nouredine,   Lotfi Zekri