@article{Niedziela:2004,
  author  = "M. Niedziela and T. Sułkowski",
  title   = "Numerical experiments for mathematical models of railway track oscillations",
  journal = "Applicationes Mathematicae",
  volume  = "Vol. 31",
  number  = "no 4",
  pages   = "433--441",
  year    = "2004",
}