@ARTICLE{Siemek_Jakub_Analytical_2014,
 author={Siemek, Jakub and Stopa, Jerzy},
 number={No 4},
 journal={Archives of Mining Sciences},
 howpublished={online},
 year={2014},
 publisher={Committee of Mining PAS},
 title={Analytical Model of Water Flow in Coal with Active Matrix},
 URL={http://czasopisma.pan.pl/Content/93737/PDF/10267-Volume59_Issue4-16_paper.pdf},
 doi={10.2478/amsc-2014-0074},
}