@article{Pilawa:2009,
author
=
"B.Pilawa and A.Więckowski and R.Pietrzak and H.Wachowska",
title
=
"Multi-component EPR spectra of coals with different carbon content",
journal
=
"Acta Physica Polonica A",
volume
=
"Vol 108",
number
=
"no 2",
pages
=
"403--407",
year
=
"2005",
}