X-ray flare in XRF 050406: evidence for prolonged engine activity P. Romano, A. Moretti, P. L. Banat, D. N. Burrows, S. Campana, G. Chincarini, S. Covino, D. Malesani, G. Tagliaferri, S. Kobayashi et al. (26 more) A&A, 450 1 (2006) 59-68 Published online: 03 April 2006 DOI: 10.1051/0004-6361:20054172