1. Department of Mathematics and Statistics, Hazara University, Mansehra, Pakistan
2. Future Technology Research Center, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan, R.O.C.
3. Department of Mathematics, Cankaya University, Ankara, Turkey
4. Institute of Space Science, Magurele-Bucharest, Romania