Strong lensing analysis of the cluster RCS0224-0002 at z = 0.77 J. Rzepecki, M. Lombardi, P. Rosati, A. Bignamini and P. Tozzi A&A, 471 3 (2007) 743-752 Published online: 02 July 2007 DOI: 10.1051/0004-6361:20077594