1. Department of Mathematics, Government College University Faisalabad, Faisalabad, Pakistan
2. Department of Mathematics and Statistics, College of Science, Imam Muhammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
3. Department of Mathematics and Informatics, Antananarivo University, BP 907 101, Antananarivo, Madagascar
4. Wasfaty for Information Technology, Riyadh, Saudi Arabia