Аутори:
1. Marko Mancic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
2. Dragoljub Živković, Универзитет у Нишу, Машински факултет, Serbia
3. Velimir Stefanovic, Универзитет у Нишу, Машински факултет, 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