Energy fluctuations in vibrated and driven granular gases P. Visco, A. Puglisi, A. Barrat, F. van Wijland and E. Trizac Eur. Phys. J. B, 51 3 (2006) 377-387 Published online: 13 June 2006 DOI: 10.1140/epjb/e2006-00230-x