The percolation staircase model and its manifestation in composite materials I. Balberg, D. Azulay, Y. Goldstein, J. Jedrzejewski, G. Ravid and E. Savir Eur. Phys. J. B, 86 10 (2013) 428 Published online: 14 October 2013 DOI: 10.1140/epjb/e2013-40200-7