@ARTICLE{Mehdi_Hosseini_Seyed_Development_2013,
 author={Mehdi, Hosseini Seyed and Reza, Mikaeil and Mohammad, Ataei and Khalokakaei, Reza},
 number={No 1},
 journal={Archives of Mining Sciences},
 howpublished={online},
 year={2013},
 publisher={Committee of Mining PAS},
 type={Artykuły / Articles},
 title={Development a New Classification for Assessing the Coal Mine Mechanization},
 URL={http://journals.pan.pl/Content/93094/PDF/10267-Volume58_Issue1-15_paper.pdf.pdf},
 doi={10.2478/amsc-2013-0015},
}