@ARTICLE{Szlązak_Nikodem_Comparison_2014,
 author={Szlązak, Nikodem and Borowski, Marek and Obracaj, Dariusz and Swolkień, Justyna and Korzec, Marek},
 number={No 3},
 journal={Archives of Mining Sciences},
 howpublished={online},
 year={2014},
 publisher={Committee of Mining PAS},
 title={Comparison of Methane Drainage Methods Used in Polish Coal Mines},
 URL={http://journals.pan.pl/Content/93623/PDF/10267-Volume59_Issue3-06_paper.pdf},
 doi={10.2478/amsc-2014-0046},
}