1. Department of Mathematics, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
2. Department of Mathematics and Statistics, Jordan University of Science and Technology, Irbid, Jordan
3. Department of Mathematics, COMSATS University Islamabad, Sahiwal, Pakistan
4. Department of Mathematics, College of Science and Arts in Riyadh Alkkbra, Qassim University, Buraydah, Saudi Arabia
5. Department of Mathematics and Statistics, Riphah International University I-14, Islamabad, Pakistan
6. Department of Mathematics, College of Science and Humanities, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
7. Department of Basic Engineering Science, Faculty of Engineering, Menoufia University, Shebin El-Kom, Egypt
8. Department of Mathematics, College of Sciences, King Khalid University, Abha, Saudi Arabia