Autori:
1. Marko Mancic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
2. Dragoljub Živković, Univerzitet u Nišu, Mašinski fakultet, Serbia
3. Velimir Stefanovic, Univerzitet u Nišu, Mašinski fakultet, Serbia
4. Vladana Stanković, Faculty of Civil Engineering and Architecture in Niš, Serbia
5. Goran Jovanović, Faculty of Civil Engineering and Architecture in Niš, Serbia