@ARTICLE{Cichowski_Edward_The_2003,
 author={Cichowski, Edward},
 number={No 1},
 journal={Archives of Mining Sciences},
 pages={81-100},
 howpublished={online},
 year={2003},
 publisher={Committee of Mining PAS},
 type={Article},
 title={The risk of mining resulting from methane hazard},
 URL={http://czasopisma.pan.pl/Content/131893/PDF-MASTER/6_MINING_48_1_2003_Cichowski_RYZYKO.pdf},
}