@article{Courvoisier:2013MN,
  author = "Courvoisier, Thierry J.-L.",
  title = "{Active Galactic Nuclei: present observations and prospects}",
  doi = "10.22323/1.176.0056",
  journal = "PoS",
  year = 2013,
  volume = "INTEGRAL 2012",
  pages = "056"
}