@ARTICLE{
author={Brankov Jovana J,Milijasevic Dragana P,Milanovic Ana},
year={2012},
title={The Assessment of the Surface Water Quality Using the Water Pollution Index: a Case Study of the Timok River (The Danube River Basin), Serbia},
journal={ARCHIVES OF ENVIRONMENTAL PROTECTION},
volume={38},
number={1},
pages={49-61},
document_type={Article},
} 

@ARTICLE{
author={Milanovic Ana,Milijasevic Dragana P,Brankov Jovana J},
year={2011},
title={Assessment of Polluting Effects and Surface Water Quality Using Water Pollution Index: a Case Study of Hydro - System Danube - Tisa - Danube, Serbia},
journal={CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES},
volume={6},
number={2},
pages={269-277},
document_type={Article},
} 

@ARTICLE{
author={Milijasevic Dragana P,Milanovic Ana,Brankov Jovana J,Radovanovic Milan M},
year={2011},
title={Water Quality Assessment of the Borska Reka River Using the WPI (Water Pollution Index) Method},
journal={ARCHIVES OF BIOLOGICAL SCIENCES},
volume={63},
number={3},
pages={819-824},
document_type={Article},
}