@article{Beckmann:2009,
  author  = "V. Beckmann and S. Soldi and C. Ricci and J. Alfonso-Garzón and T. Courvoisier and A. Domingo and N. Gehrels and P. Lubiñski and J. Mas-Hesse and A. Zdziarski",
  title   = "The second INTEGRAL AGN catalogue",
  journal = "Astronomy & Astrophysics",
  volume  = "Vol. 505",
  pages   = "417--439",
  year    = "2009",
}