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Author(s):
1. Predrag Živković, Faculty of Mechanical Engineering in Niš, Serbia
2. Sadoon Ayed, Faculty of Mechanical Engineering in Niš, Serbia
3. Mladen Tomić, The School of Higher Technical Professional Education, Niš, Serbia
4. Janja Branković, Faculty of Mechanical Engineering in Niš, Serbia
5. Mirko Dobrnjac, Faculty of Mechanical Engineering,
Republic of Srpska, Bosnia and Herzegovina
Paper for reviews