author  = "J. Kaastra and P. Petrucci and M. Cappi and N. Arav and E. Behar and S. Bianchi and J. Bloom and A. Blustin and G. Branduardi-Raymont and E. Costantini and M. Dadina and R. Detmers and J. Ebrero and P. Jonker and C. Klein and G. Kriss and P. Lubiński and J. Malzac and M. Mehdipour and S. Paltani and C. Pinto and G. Ponti and E. Ratti and R. Smith and K. Steenbrugge and C. de Vries",
  title   = "Multiwavelength campaign on Mrk 509 : I. Variability and spectral energy distribution",
  journal = "Astronomy & Astrophysics",
  volume  = "Vol. 534",
  pages   = "[10]",
  year    = "2011",