@ARTICLE{Dziurzyński_Wacław_Mathematical_2001,
 author={Dziurzyński, Wacław and Krach, Andrzej},
 number={No 4},
 journal={Archives of Mining Sciences},
 pages={433-449},
 howpublished={online},
 year={2001},
 publisher={Committee of Mining PAS},
 type={article},
 title={Mathematical model ofmethane emission caused by a collapse of rock mass crump},
 URL={http://czasopisma.pan.pl/Content/132261/PDF/5_MINING_46_4_2001_Dziurzynski_MATHEMATICAL.pdf},
}