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Author(s):
1. Janja Branković, Faculty of Mechanical Engineering in Niš, Serbia
2. Predrag Živković, Faculty of Mechanical Engineering in Niš, Serbia
3. Dragana Dimitrijević, Faculty of Mechanical Engineerning, Serbia
4. Jelena Janevski, Faculty of Mechanical Engineering in Niš, Serbia
5. Sanja Dobrnjac, Projekt,
Republic of Srpska, Bosnia and Herzegovina
Paper for reviews