Аутори:
1. Bogdan Marić,
Republic of Srpska, Bosnia and Herzegovina
2. Ranko Bozickovic, Univerzitet u Istočnom Sarajevu Saobraćajni fakultet Dobo,
Republic of Srpska, Bosnia and Herzegovina
3. Milos Sorak, Технолошки факултет Универзитета у Бањој Луци,
Republic of Srpska, Bosnia and Herzegovina
4. Zdravko Bozickovic, University of East Sarajevo, Faculty for Mechanical Engineering East Sarajevo,
Federation of Bosnia and Herzegovina
, Bosnia and Herzegovina