@ARTICLE{Ilie_Onica_Economical_2016,
 author={Ilie Onica and Mihăilescu, Viorel and Andrioni, Felicia},
 number={No 3},
 journal={Archives of Mining Sciences},
 howpublished={online},
 year={2016},
 publisher={Committee of Mining PAS},
 title={Economical Optimization of the Mechanized Longwall Faces with Top Coal Caving Mining, In Horizontal Slices},
 URL={http://ochroma.man.poznan.pl/Content/105527/PDF/10267-Volume61_Issue3-14_paper.pdf},
 doi={10.1515/amsc-2016-0046},
}