@article{Pilawa:2009,
author
=
"B.Pilawa and A.Więckowski and R.Pietrzak and H.Wachowska",
title
=
"EPR studies of demineralized and oxidized coal",
journal
=
"Molecular Physics Reports",
volume
=
"Vol. 34",
number
=
"no 2",
pages
=
"122--126",
year
=
"2001",
}