Author(s):
1. Mihailo Lazarevic, Mašinski fakultet Univerziteta u Beogradu, Serbia
2. Petar Mandić, Univeristy of Belgrade, Faculty of Mechanical Engineering, Serbia
3. Tihomir Latinović, Faculty of Mechanical Engineering,
Republic of Srpska, Bosnia and Herzegovina
4. Trygve Thomessen, PPM AS, Norway