Unravelling the size distribution of social groups with information theory in complex networks A. Hernando, D. Villuendas, C. Vesperinas, M. Abad and A. Plastino Eur. Phys. J. B, 76 1 (2010) 87-97 Published online: 02 July 2010 DOI: 10.1140/epjb/e2010-00216-1