Spectral analysis of 35 GRBs/XRFs observed with HETE-2/FREGATE C. Barraud, J.-F. Olive, J. P. Lestrade, J.-L. Atteia, K. Hurley, G. Ricker, D. Q. Lamb, N. Kawai, M. Boer, J.-P. Dezalay et al. (20 more) A&A, 400 3 (2003) 1021-1030 Published online: 07 March 2003 DOI: 10.1051/0004-6361:20030074