1. Department of Mathematics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
2. Department of Mathematics, Faculty of Science, University of Phayao, Phayao 56000, Thailand
3. Department of Mathematical Sciences, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
4. Department of Mathematics, Hazara University, Mansehra, Pakistan
5. Universidad Nacional Autónoma de Chota, Cajamarca, Perú
6. Department Department of Mathematics and Statistics, American University of Sharjah, Sharjah, United Arab Emirates
7. Technical University of Cartagena, Applied Mathematics and Statistics Department, Spain