Brunner, H., Cappelluti, N., Hasinger, G., Barcons, X., Fabian, A. C., Mainieri, V., et al. (2008). XMM-Newton observations of the Lockman hole: X-ray source catalogue and number counts. Astronomy & Astrophysics, 479(1), 283-300. doi:10.1051/0004-6361:20077687.