A mean redshift of 2.8 for Swift gamma-ray bursts P. Jakobsson, A. Levan, J. P. U. Fynbo, R. Priddey, J. Hjorth, N. Tanvir, D. Watson, B. L. Jensen, J. Sollerman, P. Natarajan et al. (11 more) A&A, 447 3 (2006) 897-903 Published online: 10 February 2006 DOI: 10.1051/0004-6361:20054287