@article{Kijak:2007,
  author  = "J. Kijak and Y. Gupta and K. Krzeszowski",
  title   = "Turn-over in pulsar spectra around 1 GHz",
  journal = "Astronomy & Astrophysics",
  volume  = "Vol. 462",
  pages   = "699--702",
  year    = "2007",
}