@article{Maciejewski:2002,
  author  = "A. Maciejewski and M. Przybylska and M. Szydłowski",
  title   = "Living in a non-integrable universe",
  journal = "Gravitation and Cosmology",
  volume  = "Vol. 8",
  number  = "suppl. 2",
  pages   = "93--99",
  year    = "2002",
}