Author(s):
1. Isak Karabegović, Tehnički fakultet u Bihaću, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina
2. Sanel Keranović, Tehnički fakultet u Bihaću, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina
3. Ermin Husak, Tehnički fakultet u Bihaću, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina
4. Safet Isic, Faculty of Engineering, Mostar, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina