1. Department of Mathematics, Abdul Wali Khan University Mardan, Mardan, Pakistan
2. Faculty of Mechanical and Industrial Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
3. College of Engineering and Technology, American University of the Middle East, Egaila, Kuwait
4. Department of Mathematics, College of Science and Humanities in Alkharj, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia