The XMM deep survey in the CDF-S - VIII. X-ray properties of the two brightest sourcesK. Iwasawa, C. Vignali, A. Comastri, R. Gilli, F. Vito, W. N. Brandt, F. J. Carrera, G. Lanzuisi, S. Falocco and F. VagnettiA&A, 574 (2015) A144DOI: https://doi.org/10.1051/0004-6361/201425086