Salvato, M. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Lusso, E., Hennawi, J. F., Comastri, A., Zamorani, G., Richards, G. T., Vignali, C., et al. (2013). The obscured fraction of active galactic nuclei in the XMM-COSMOS survey: a spectral energy distribution perspective. The Astrophysical Journal, 777(2): 86, pp. 1-28. doi:10.1088/0004-637X/777/2/86.