1. Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Ivana Lucica Street No.1, 10000 Zagreb, Croatia (Corresponding author), e-mail: darko.landek@fsb.hr
2. Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Ivana Lucica Street No.1 Zagreb, 10000, Croatia
3. Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Ivana Lucica Street No.1, 10000 Zagreb, Croatia