@article{Go¼dziewski:2000,
  author  = "K. Go¼dziewski and A. Maciejewski and Z. Niedzielska",
  title   = "Searching for integrable systems : An application of Kozlov theorem",
  journal = "Reports on Mathematical Physics",
  volume  = "Vol. 46",
  number  = "no 1/2",
  pages   = "175--182",
  year    = "2000",
}