@ARTICLE{
author={Hijazi Omar,Djatkov Djordje M,Effenberger Mathias},
year={2017},
title={Calculating Greenhouse Gas Mitigation from the Utilization of Biogas for Combined Heat-And-Power Production},
journal={ACTUAL TASKS ON AGRICULTURAL ENGINEERING},
volume={45},
number={},
pages={427-435},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Djatkov Djordje M,Effenberger Mathias,Martinov Milan L},
year={2014},
title={Method for assessing and improving the efficiency of agricultural biogas plants based on fuzzy logic and expert systems},
journal={APPLIED ENERGY},
volume={134},
number={},
pages={163-175},
document_type={Article},
} 

@ARTICLE{
author={Djatkov Djordje M,Effenberger Mathias,Martinov Milan L},
year={2012},
title={Development of a Method for Assessing the Performance of Agricultural Biogas Plants},
journal={AKTUALNI ZADACI MEHANIZACIJE POLJOPRIVREDE},
volume={40},
number={},
pages={557-567},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Djatkov Djordje M,Effenberger Mathias,Lehner Andreas,Martinov Milan L,Tesic Milos,Gronauer Andreas},
year={2012},
title={New method for assessing the performance of agricultural biogas plants},
journal={RENEWABLE ENERGY},
volume={40},
number={1},
pages={104-112},
document_type={Article},
} 

@ARTICLE{
author={Effenberger Mathias,Djatkov Djordje M},
year={2011},
title={Monitoring and Assessing the Performance of Agricultural Biogas Plants},
journal={AKTUALNI ZADACI MEHANIZACIJE POLJOPRIVREDE},
volume={39},
number={},
pages={201-210},
document_type={Proceedings Paper},
}