On the nature of late X-ray flares in Swift gamma-ray bursts P. A. Curran, R. L. C. Starling, P. T. O'Brien, O. Godet, A. J. van der Horst and R. A. M. J. Wijers A&A, 487 2 (2008) 533-538 Published online: 16 June 2008 DOI: 10.1051/0004-6361:200809652