@article{Pilawa:2015,
author
=
"B.Pilawa and H.Wachowska and M.Kozłowski and A.Więckowski and L.Najder-Kozdrowska",
title
=
"Groups of paramagnetic centres in reduced and methylated low rank coal",
journal
=
"Acta Physica Polonica A",
volume
=
"Vol. 128",
number
=
"no. 3",
pages
=
"264--267",
year
=
"2015",
}