1. Department of Mathematics, Riphah International University Faisalabad Campus, Pakistan
2. Department of Mathematics Deanship of Applied Sciences Umm Al-Qura University, Makkah, Saudi Arabia
3. Department of Mathematics, Abdul Wali khan University Mardan, KP, Pakistan
4. Programme of Mathematics, Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu, 21030 Kuala Nerus Terengganu, Malaysia