1. Department of Mathematics, University of Malakand, Dir (L), Khyber Pakhtunkhwa, Pakistan
2. Department of Mathematics, Chandigarh University, Chandigarh, Punjab, India
3. Department of Mathematics and General Sciences, Prince Sultan University, Riyadh, Saudi Arabia
4. Department of Medical Research, China Medical University, Taichung, Taiwan
5. Department of Computer Science and Information Engineering, Asia University, Taichung, Taiwan
6. Department of Mathematics, Cankaya University, Ankara, Turkey