@ARTICLE{Parzentny_Henryk_Evaluation_2017,
 author={Parzentny, Henryk and Róg, Leokadia},
 volume={vol. 33},
 number={No 1},
 journal={Gospodarka Surowcami Mineralnymi - Mineral Resources Management},
 howpublished={online},
 year={2017},
 publisher={Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN},
 publisher={Instytut Gospodarki Surowcami Mineralnymi i Energią PAN},
 title={Evaluation the Value of Some Petrographic, Physico-Chemical and Geochemical Indicators of Quality of Coal in Paralic Series of the Upper Silesian Coal Basin and Attempt to Find a Correlation Between Them},
 URL={http://journals.pan.pl/Content/105946/PDF/gospo-2017-0004.pdf},
 doi={10.1515/gospo-2017-0004},
}