@article{Słowik:2009,
author
=
"G.Słowik and W.Wojtowicz and A.Więckowski",
title
=
"EPR evidence for thermally excited triplet states in exinite, vitrinite and inertinite separated from bituminous coal",
journal
=
"Acta Physica Polonica A",
volume
=
"Vol 108",
number
=
"no 1",
pages
=
"171--176",
year
=
"2005",
}