1. Basic Science Department, College of Science and Theoretical Studies, Saudi Electronic University, Riyadh, Saudi Arabia
2. Department of Mathematics, Mohi-Ud-Din Islamic University, Nerian Sharif AJ&K, Pakistan
3. Department of Mathematics and Statistics, Hazara University, Mansehra, Pakistan
4. Department of English, Faculty of Languages and Translation, King Khalid University, Abha, Kingdom of Saudi Arabia