1. Department of Mathematics, Islamia College University Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
2. Department of Mathematical Sciences, University of Lakki Marwat, Lakki Marwat 28420, Khyber Pakhtunkhwa, Pakistan
3. Department of Mathematics College of Science and Arts, Rabigh King Abdul-Aziz University, Rabigh 21911, Saudi Arabia