@article{Turek:2009,
author
=
"M.Turek and P.Rozmej and R.Arvieu",
title
=
"Spin-orbit pendulum ( relativistic extension. )",
journal
=
"Acta Physica Polonica, Series B.",
volume
=
"Vol. 31",
number
=
"no 2",
pages
=
"517--521",
year
=
"2000",
}