| Affiliation: | 1. Mathematics Department, Faculty of Science, Zagazig University, Zagazig, Egypt;2. Department of Physics, Chemistry and Mathematics, Alabama A&M University, Normal, AL 35762–4900, USA;3. Department of Mathematics, King Abdulaziz University, Jeddah–21589, Saudi Arabia;4. Department of Applied Mathematics, National Research Nuclear University, 31 Kashirskoe Shosse, 115409 Moscow, Russian Federation;5. Department of Mathematics, Faculty of Science and Arts, Yozgat Bozok University, 66100 Yozgat, Turkey;6. Faculty of Sciences and Environment, Department of Chemistry, Physics and Environment, Dunarea de Jos University of Galati, 47 Domneasca Street, 800008, Romania;7. Science Program, Texas A&M University at Qatar, PO Box 23874, Doha, Qatar |
