@ARTICLE{Nawrat_Stanisław_Invasive_2002,
 author={Nawrat, Stanisław},
 number={No 4},
 journal={Archives of Mining Sciences},
 pages={447-487},
 howpublished={online},
 year={2002},
 publisher={Committee of Mining PAS},
 type={Article},
 title={Invasive filling of sealed headings and goafs in coal mines with methane - experimental and model research},
 URL={http://journals.pan.pl/Content/132196/PDF/3_MINING_47_4_2002_Nawrat_INVASIVE.pdf},
}