@ARTICLE{
author={Vuckovic Bogoljub,Nesic Dusko},
year={2013},
title={Sulfur in Lignites of Kolubara Coal Mines (Kcm) - Environmental Friendly?},
journal={GEOCONFERENCE ON SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING, SGEM 2013, VOL I},
volume={},
number={},
pages={743-748},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Vuckovic Bogoljub,Nesic Dusko,Andjelkovic Nikola},
year={2012},
title={Geological Explorations Investments - What Does It Worth? (Review of Kolubara Coal Mines, Serbia)},
journal={12th International Multidisciplinary Scientific Geoconference, SGEM 2012, Vol. I},
volume={},
number={},
pages={593-602},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Vuckovic Bogoljub,Nesic Dusko},
year={2011},
title={Beyond 2010, Sustainable Development in Kolubara Coal Mines, Serbia},
journal={11TH INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE (SGEM 2011), VOL I},
volume={},
number={},
pages={727-734},
document_type={Proceedings Paper},
}