@article{Pilawa:2009,
author
=
"B.Pilawa and B.Trzebicka and A.Więckowski",
title
=
"Microwave saturation of e.p.r. spectra of vitrinite and products of its pyridine extraction",
journal
=
"Fuel",
volume
=
"Vol. 70",
number
=
"no 9",
pages
=
"1109--1110",
year
=
"1991",
}