@article{Urbanowski:2012,
author
=
"K.Urbanowski and J.Piskorski",
title
=
"Late time behavior of unstable particles",
journal
=
"Journal of Nuclear and Particle Physics",
volume
=
"Vol. 2",
number
=
"no. 3",
pages
=
"71--76",
year
=
"2012",
}