First superburst from a classical low-mass X-ray binary transient L. Keek, J. J. M. in 't Zand, E. Kuulkers, A. Cumming, E. F. Brown and M. Suzuki A&A, 479 1 (2008) 177-188 Published online: 04 December 2007 DOI: 10.1051/0004-6361:20078464