1. Department of Mathematics, Lamar University, Beaumont, TX 77710, USA
2. Department of Applied Mathematics, National Research Nuclear University, 31 Kashirskoe Hwy, Moscow 115409, Russian Federation
3. Mathematical Modeling and Applied Computation (MMAC) Research Group, Department of Mathematics, King Abdulaziz University, Jeddah 21589, Saudi Arabia
4. Department of Mathematics and Applied Mathematics, Sefako Makgatho Health Sciences University, Medunsa 0204, Pretoria, South Africa
5. Department of Physics, Chemistry and Mathematics, Alabama A&M University, Normal, AL 35762-4900, USA
6. School of Mathematics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
7. Department of Mathematics, Howard University, Washington, DC 20059, USA
8. Department of Mathematics, Faculty of Science and Arts, Yozgat Bozok University, 66100 Yozgat, Turkey
9. Institute of Physics Belgrade, Pregrevica 118, 11080 Zemun, Serbia