Simulation study of the inhomogeneous Olami-Feder-Christensen model of earthquakes T. Yamamoto, H. Yoshino and H. Kawamura Eur. Phys. J. B, 77 4 (2010) 559-564 Published online: 12 October 2010 DOI: 10.1140/epjb/e2010-10503-4