1. Department of Mathematics, Faculty of Science, University of Tabuk, P. O. Box741, Tabuk 71491, Saudi Arabia
2. Institut Supérieur d'Informatique et des Techniques de Communication, Université de Sousse, H. Sousse 4000, Tunisia
3. Department of Mathematics and Applied Mathematics, Sefako Makgatho Health Sciences University, Ga-Rankuwa, South Africa
4. Department of Mathematics, College of Science, Qassim University, Buraydah 52571, Saudi Arabia
5. Department of Mathematics, Saveetha School of Engineering, SIMATS, Saveetha University, Chennai 602105, India
6. Department of Mathematics, Faculty of Science, Sohag University, Sohag 82524, Egypt