1. Department of Mathematics and Statistics, College of Science, King Faisal University, Al-Hasa 31982, Saudi Arabia
2. Department of Mathematics, Government College University, Faisalabad 38000, Pakistan
3. Department of Mathematics and Statistics, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
4. Department of Mathematics and Computer Sciences, Faculty of Science Menoufia University, Shebin Elkom, Egypt