@article{Karczewska:2014,
  author  = "A. Karczewska and P. Rozmej and . Rutkowski",
  title   = "A new nonlinear equation in the shallow water wave problem",
  journal = "Physica Scripta",
  volume  = "Vol. 89",
  number  = "no. 5",
  pages   = "1--7",
  year    = "2014",
}