@ARTICLE{Krawczyk_Jerzy_Modeling_2014,
 author={Krawczyk, Jerzy and Janus, Jakub},
 number={No 4},
 journal={Archives of Mining Sciences},
 howpublished={online},
 year={2014},
 publisher={Committee of Mining PAS},
 title={Modeling of the Propagation of Methane from the Longwall Goaf, Performed by Means of a Two-Dimensional Description},
 URL={http://czasopisma.pan.pl/Content/93679/PDF/10267-Volume59_Issue4-01_paper.pdf},
 doi={10.2478/amsc-2014-0059},
}