@article{Pilawa:2009,
author
=
"B.Pilawa and A.Więckowski and M.Kozłowski and H.Wachowska",
title
=
"Multicomponent structure of EPR spectra of bituminous coal modified in the potassium-liquid ammonia system",
journal
=
"Nukleonika",
volume
=
"Vol. 42",
number
=
"no 2",
pages
=
"447--456",
year
=
"1997",
}