@ARTICLE{Dubiński_Józef_Key_2017,
 author={Dubiński, Józef and Turek, Marian and Prusek, Stanisław},
 number={No 3},
 journal={Archives of Mining Sciences},
 howpublished={online},
 year={2017},
 publisher={Committee of Mining PAS},
 title={Key Tasks of Science in Improving Effectiveness of Hard Coal Production in Poland},
 URL={http://journals.pan.pl/Content/105596/PDF/10267-Volume62_Issue3-11_paper.pdf},
 doi={10.1515/amsc-2017-0043},
}