1. Department of Mathematics and Statistics, Bacha Khan University Charsadda, KPK Pakistan
2. Department of Mathematics and Statistics, Riphah International University, Islamabad Pakistan
3. Department of Mathematics, Islamia College University Peshawar, KPK Pakistan
4. Islamabad Model College for Girls F-6/2 Islamabad Pakistan
5. Research Institute of Natural Sciences, Hanyang University, Seoul, Republic of Korea