@ARTICLE{
author={Stankovic Dragica M,Ivetic Vladan K,Ocokoljic Mirjana Z,Jokanovic Dusan,Oljaca Rodoljub,Mitrovic Suzana Z},
year={2015},
title={Manganese Concentration in Plants of the Protected Natural Resource, Kosmaj, in Serbia},
journal={ARCHIVES OF BIOLOGICAL SCIENCES},
volume={67},
number={1},
pages={251-255},
document_type={Article},
} 

@ARTICLE{
author={Sijacic-Nikolic Mirjana T,Krstic Borivoj Dj,Vilotic Dragica,Stankovic Dragica M,Oljaca Rodoljub},
year={2011},
title={Comparative Research of Accumulation of Heavy Metals in Woody Plants and Herbs},
journal={FRESENIUS ENVIRONMENTAL BULLETIN},
volume={20},
number={12},
pages={3095-3100},
document_type={Article},
}