1. Department of Mathemtics, Government College University Lahore (GCUL), Lahore 54000, Pakistan
2. Department of Medical Research, China Medical University, Taichung, Taiwan
3. Department of Mathematics and Applied Mathematics, University of Pretoria, Lynnwood road, Pretoria 0002, South Africa
4. Department of Mathematics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
5. Department of Mechanical Engineering, College of Engineering in Wadi Alddawasir, Prince Sattam bin Abdulaziz University, Saudi Arabia
6. Production Engineering and Mechanical Design Department, Faculty of Engineering, Mansoura University, P.O. 35516, Mansoura, Egypt