@article{Czerhoniak:1998,
  author  = "P. Czerhoniak and A. Nowicki",
  title   = "Twisted classical phase space",
  journal = "Czechoslovak Journal of Physics",
  volume  = "Vol. 48",
  number  = "no 11",
  pages   = "1313--1318",
  year    = "1998",
}