Analysis of complex networks associated to seismic clusters near the Itoiz reservoir dam A. Jiménez, K. F. Tiampo, A. M. Posadas, F. Luzón and R. Donner Eur. Phys. J. Special Topics, 174 (2009) 181-195 Published online: 14 July 2009 DOI: 10.1140/epjst/e2009-01099-1