1. Institute of Mathematics, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan
2. Department of Mathematics, Faculty of Science, Khon Kaen University, Thailand
3. Department of Basic Sciences, College of Sciences and Theoretical Studies, Dammam-Branch, Saudi Electronic University, Riyad, Saudi Arabia
4. Department of Mathematics, College of Science, Taif University, Saudi Arabia
5. Department of Mathematics, Turabah University College, Taif University, Saudi Arabia