Ciliegi, P., Jurlin, N., Butler, A., Delhaize, J., Fotopoulou, S., Huynh, M., …Pierre, M. (2018). The XXL Survey: XXVI. Optical and near-infrared identifications of the ATCA 2.1 GHz radio sources in the XXL-S Field. Astronomy & Astrophysics, 620, https://doi.org/10.1051/0004-6361/201833616