1. Department of Physics, Kogi State University, Anyigba, Nigeria
2. Department of Physics, University of Uyo, Uyo, Nigeria
3. Department of Physics, University of Agriculture and Environmental sciences, Umuagwo, Nigeria
4. Department of Physics, University of Port Harcourt, Choba, Nigeria
5. Faculty of Physical Sciences, Department of Physics, Modibbo Adama University, Yola, Nigeria
6. Department of Physical Sciences, Redeemer’s University, Ede, Nigeria
7. Instituto Federal Sudeste de Minas Gerais, Juiz de Fora – MG, Brasi
8. Theoretical Physics Section, Department of Physics, University of Ilorin, Ilorin, Nigeria