@ARTICLE{
author={Obradovic Slobodan I,Spalevic Zaklina,Knezevic Miijana,Tesic Dejan,Markovic Vesna,Zoric Aleksandar C},
year={2012},
title={Causes delays in the development of card business},
journal={TECHNICS TECHNOLOGIES EDUCATION MANAGEMENT-TTEM},
volume={7},
number={4},
pages={1796-1808},
document_type={Article},
} 

@ARTICLE{
author={Milanovic Djurdje R,Sajfert Vjekoslav D,Obradovic Slobodan I,Vujotic Ljiljana B,Rosic Bozidar B,Milanovic Srdjan D},
year={2011},
title={Modified divergence theorem for analysis and optimization of wall reflecting cylindrical UV reactor},
journal={HEMIJSKA INDUSTRIJA},
volume={65},
number={4},
pages={343-354},
document_type={Article},
}