@article{Chernyakova:2007,
  author  = "M. Chernyakova and A. Neronov and T. Courvoisier and M. Türler and S. Soldi and V. Beckmann and P. Lubiński and R. Walter and M. Page and M. Stuhlinger and R. Staubert and I. McHardy",
  title   = "2003-2005 INTEGRAL and XMM-Newton observations of 3C 273",
  journal = "Astronomy & Astrophysics",
  volume  = "Vol. 465",
  pages   = "147--156",
  year    = "2007",
}