@ARTICLE{Widera_Marek_Compaction_2015,
 author={Widera, Marek},
 volume={vol. 65},
 number={No 3},
 journal={Acta Geologica Polonica},
 howpublished={online},
 year={2015},
 publisher={Komitet Nauk Geologicznych PAN},
 publisher={Wydział Geologii UW},
 title={Compaction of lignite: a review of methods and results},
 URL={http://www.czasopisma.pan.pl/Content/81970/PDF/05_widera.pdf},
 doi={10.1515/agp-2015-0016},
}