@InProceedings{Pilawa:1991,
author
=
"B.Pilawa and A.Więckowski and B.Trzebicka",
title
=
"Electron paramagnetic resonance study of coal macerals",
booktitle
=
"Structure and Properties of Coals proceedings : international conference",
address
=
"Wrocław, Polska",
publisher
=
"Wrocław [brak wydawcy] ",
pages
=
"17--19",
organization
=
"Institute of Chemistry and Technology of petroleum and Coal Technical University of Wrocław",
year
=
"1991",
}