1. Department of Mathematics, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
2. Department of Mathematics and Computer Science, St. Thomas College, Bhilai, Chhattisgarh, India
3. University of Belgrade, Faculty of Mechanical Engineering, 11000 Beograd, Kraljice Marije 16, Serbia
4. Faculty of Transport and Traffic Engineering, University of East Sarajevo, Vojvode Mišića 52, 53000 Doboj, Bosnia and Herzegovina
5. University of Banja Luka, Faculty of Electrical Engineering, 78000 Banja Luka, Patre 5, Bosnia and Herzegovina