@ARTICLE{
author={Sajn Robert,Alijagic Jasminka,Ristovic Ivica M},
year={2024},
title={Secondary Deposits as a Potential REEs Source in South-Eastern Europe},
journal={MINERALS},
volume={14},
number={2},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Sajn Robert,Ristovic Ivica M,Ceplak Barbara},
year={2022},
title={Mining and Metallurgical Waste as Potential Secondary Sources of Metals-A Case Study for the West Balkan Region},
journal={MINERALS},
volume={12},
number={5},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Ristic Svetlana,Stamenkovic Slavisa M,Stojkovic-Piperac Milica,Sajn Robert,Kosanic Marijana M,Rankovic Branislav R},
year={2020},
title={Searching for lichen indicator species: the application of self-organizing maps in air quality assessment-a case study from Balkan area (Serbia)},
journal={ENVIRONMENTAL MONITORING AND ASSESSMENT},
volume={192},
number={11},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Djekic Tatjana L,Ristic Svetlana,Stamenkovic Slavisa M,Sajn Robert,Engelman Milica},
year={2020},
title={Lichens as Indicators of Air Quality in Balneological Center Prolom Banja (Southern Serbia)},
journal={JOURNAL OF THE GEOGRAPHICAL INSTITUTE JOVAN CVIJIC SASA},
volume={70},
number={2},
pages={101-113},
document_type={Article},
}