@article{Kalaga:2005,
  author  = "J. Kalaga and W. Leoński",
  title   = "Quantum chaos for nonlinear Kerr-like oscillator",
  journal = "Acta Physica Hungarica B : Quantum Electronics",
  volume  = "Vol. 23",
  number  = "no 1-2",
  pages   = "61--66",
  year    = "2005",
}