@article{Klužniak:2005,
  author  = "W. Klužniak and M. Abramowicz",
  title   = "Resonant oscillations of accretion flow and kHz QPOs",
  journal = "Astrophysics and Space Science",
  volume  = "Vol. 300",
  number  = "no 1-3",
  pages   = "143--148",
  year    = "2005",
}