@article{Więckowski:2009,
author
=
"A.Więckowski and B.Pilawa and L.Świątkowska and W.Wojtowicz and G.Słowik and M.Lewandowski",
title
=
"Thermally excited multiplet states in macerals separated from bituminous coal",
journal
=
"Journal of Magnetic Resonance",
volume
=
"Vol. 145",
number
=
"no 1",
pages
=
"62--72",
year
=
"2000",
}