@article{Dryzek:2009,
author
=
"J.Dryzek",
title
=
"New experimental approach to the detection of positron annihilation in flight process",
journal
=
"Acta Physica Polonica A",
volume
=
"Vol. 113",
number
=
"no 5",
pages
=
"1339--1346",
year
=
"2008",
}