@ARTICLE{
author={Stevanovic Vladimir D,Petrovic Milan MI,Wala Tadeusz,Milivojevic Sanja S,Ilic Milica M,Muszynski Slawomir},
year={2019},
title={Efficiency and power upgrade at the aged lignite-fired power plant by flue gas waste heat utilization: High pressure versus low pressure economizer installation},
journal={ENERGY},
volume={187},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Stevanovic Vladimir D,Ilic Milica M,Djurovic Zeljko M,Wala Tadeusz,Muszynski Slawomir,Gajic Ivan},
year={2018},
title={Primary control reserve of electric power by feedwater flow rate change through an additional economizer - A case study of the thermal power plant "Nikola Tesla B"},
journal={ENERGY},
volume={147},
number={},
pages={782-798},
document_type={Article},
} 

@ARTICLE{
author={Stevanovic Vladimir D,Wala Tadeusz,Muszynski Slawomir,Milic Milos,Jovanovic Milorad D},
year={2014},
title={Efficiency and power upgrade by an additional high pressure economizer installation at an aged 620 MWe lignite-fired power plant},
journal={ENERGY},
volume={66},
number={},
pages={907-918},
document_type={Article},
}