1. Department of Mathematics, Faculty of Science, University of Ha’il, Ha’il 2440, Saudi Arabia
2. Department of Humanities and Sciences, School of Electrical Engineering and Computer Science (SEECS), National University of Sciences and Technology (NUST), Islamabad, Pakistan
3. Department of Mathematics, Abdul Wali Khan University Mardan, Pakistan
4. Department of Mathematics, Kabul Polytechnic University, Kabul, Afghanistan