@ARTICLE{
author={Jevremovic Svetlana,Vujin Vladimir D,Bogdanovic Zorica M,Djokic Dragan Z,Barac Dusan M},
year={2012},
title={Designing Adaptive E-Learning Courses Through Cloud Computing},
journal={METALURGIA INTERNATIONAL},
volume={17},
number={10},
pages={213-221},
document_type={Article},
} 

@ARTICLE{
author={Djokic Dragan Z,Labus Aleksandra B,Jevremovic Svetlana,Stokic Aleksandar,Milic Aleksandar R},
year={2012},
title={Portal for the Management of Digitally Signed Electronic Documents},
journal={METALURGIA INTERNATIONAL},
volume={17},
number={9},
pages={120-128},
document_type={Article},
}