Author(s):
1. Jovana Milanović, Tehnološko-metalurški fakultet, Univerzitet u Beogradu, Srbija, Serbia
2. Matea Korica, Innovative center, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 110, Serbia
3. Tanja Nikolic, College of Professional Technological and Artistic Education in Leskovac, Vilema Pusmana 17, Leskova, Serbia
4. Mirjana Kostic, University of Belgrade, Faculty of Technology and Metallurgy, , Serbia

Abstract