1. Department of Physics, School of Pure and Applied Sciences, Federal University of Technology, Ikot Abasi, Nigeria
2. Department of Biochemistry, School of Pure and Applied Sciences, Federal University of Technology, Ikot Abasi, Nigeria
3. Department of Physics, National Open University of Nigeria, Jabi-Abuja, Nigeria
4. Theoretical Physics Group, Department of Physics, University of Uyo, Uyo, Nigeria
5. Department of Physics, Akwa Ibom State University, Uyo, Nigeria
6. Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
7. Theoretical Physics Group, Department of Physics,, University of Calabar, Calabar, Nigeria
8. Theoretical Physics Group, Department of Physics,, University of Port Harcourt, Port Harcourt, Nigeria