@article{Kowalewska-Kudłaszyk:2009,
author
=
"A.Kowalewska-Kudłaszyk and J.Kalaga and W.Leoński",
title
=
"Quantum nonlinear oscillator, chaos and Wigner function",
journal
=
"Acta Physica Hungarica B : Quantum Electronics",
volume
=
"Vol. 26",
number
=
"no 3-4",
pages
=
"243--246",
year
=
"2006",
}