A twelve-image gravitational lens system in the z 0.84 cluster Cl J0152.7-1357C. Grillo, M. Lombardi, P. Rosati, G. Bertin, R. Gobat, R. Demarco, C. Lidman, V. Motta and M. NoninoA&A, 486 1 (2008) 45-53DOI: https://doi.org/10.1051/0004-6361:200809434