@ARTICLE{
author={Stajic Ljubisa,Djordjevic Bojan,Ilic Silvana,Brkic Dejan},
year={2021},
title={The volatility of natural gas prices - Structural shocks and influencing factors},
journal={REVISTA INTERNACIONAL DE METODOS NUMERICOS PARA CALCULO Y DISENO EN INGENIERIA},
volume={37},
number={4},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Markovic Vladimir,Stajic Ljubisa,Stevic Zeljko,Mitrovic Goran,Novarlic Boris,Radojicic Zoran A},
year={2020},
title={A Novel Integrated Subjective-Objective MCDM Model for Alternative Ranking in Order to Achieve Business Excellence and Sustainability},
journal={SYMMETRY-BASEL},
volume={12},
number={1},
pages={-},
document_type={Article},
}