Global Properties of High-Energy Emission from Gamma-Ray Bursts N. Omodei, G. Vianello, F. Piron, V. Vasileiou, S. Razzaque and the Fermi Large Area Telescope collaboration EAS Publications Series, 61 (2013) 123-128 Published online: 22 July 2013 DOI: 10.1051/eas/1361018