Search for X-ray occultations in active galactic nucleiDOI: info:10.1093/mnras/stu969v. 4422116–2130
Torricelli-Ciamponi, G., Pietrini, P., Risaliti, G., and Salvati, M. 2014. "Search for X-ray occultations in active galactic nuclei." Monthly Notices of the Royal Astronomical Society, 442 2116–2130. https://doi.org/10.1093/mnras/stu969.