Balestra, I., Vanzella, E., Rosati, P., Monna, A., Grillo, C., Nonino, M., et al. (2013). CLASH-VLT: spectroscopic confirmation of a z = 6.11 quintuply lensed galaxy in the Frontier Fields cluster RXC J2248.7-4431. Astronomy & Astrophysics, 559: L9, pp. 1-5. doi:10.1051/0004-6361/201322620.