@ARTICLE{
author={Pejcic Dusanka,Spasic Dragan,Zivkovic Snezana B},
year={2018},
title={Monitoring the Phosphorus Content from Laundry Detergents in the Nis Public Sanitation System and the Nisava River},
journal={FRESENIUS ENVIRONMENTAL BULLETIN},
volume={27},
number={9},
pages={6109-6119},
document_type={Article},
} 

@ARTICLE{
author={Zivkovic Snezana B,Todorovic Milisa,Pejcic Dusanka},
year={2016},
title={Improvements in Environmental Protection Through Optimization of Production Processes a Case Study},
journal={FRESENIUS ENVIRONMENTAL BULLETIN},
volume={25},
number={8},
pages={2725-2735},
document_type={Article},
}