@ARTICLE{
author={Zivotic Dragana R,Grzetic Ivan A,Lorenz Hans,Simic Vladimir M},
year={2008},
title={U and Th in some brown coals of Serbia and Montenegro and their environmental impact},
journal={ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH},
volume={15},
number={2},
pages={155-161},
document_type={Article},
}