1. Faculty of Electrical Engineering, University of Banja Luka, Patre 5, 78000 Banja Luka, Bosnia and Herzegovina
2. Department of Mathematics, Garmsar Branch, Islamic Azad University, Garmsar, Iran
3. Department of Mathematics and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
4. School of Computer, Data and Mathematical Sciences, Western Sydney University, Sydney 2150, Australia
5. Department of Mathematics, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia