1. Department of Mathematics, Faculty of Science, Tanta University, Tanta 31511, Egypt
2. Department of Mathematics, Faculty of Science, Zarqa University, Zarqa 13133, Jordan
3. Department of Physics and Engineering Mathematics, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
4. Mathematical and Physical Science Foundation, 4200 Slagelse, Denmark
5. Department of Mathematics, Faculty of Science, New Valley University, New Valley 72713, Egypt