1. Allègre, C.J., Le Mouël, J.L., and Provost, A. (1982), Scaling rules in rock fracture and possible implications for earthquake prediction, Nature 297, 47–49.
2. Allègre, C.J. and Le Mouël J.L. (1994), Introduction of scaling techniques in brittle fracture of rocks, Phys. Earth Planet Inter. 87, 85–93.
3. Arbabi, S. and Sahimi, M. (1988), Absence of universality in percolation models of disordered elastic media with central forces, J. Phys. A: Math. Gen. 21, L863–L868.
4. Bak, P., How Nature Works —the Science of Self-Organized Criticality (Oxford University Press, Oxford 1997), Binney, J.J., Dowrick, N.J., Fisher, A.J., and Newman, M.E.J. The Theory of Critical Phenomena —An Introduction to the Renormalization Group (Oxford University Press, Oxford 1992).
5. Bruner, W.M. (1976), Comment on’ seismic velocities in dry and saturated cracked solids’ by O’Connell and Budiansky, J. Geophys. Res. 81, 2573–2576.