1. Department of Chemistry
2. A.P.S. University
3. Rewa
4. India
5. Department of Physics
6. Govt. Model Science College
7. Department of Inorganic & Structural Chemistry
8. Howard University
9. Washington
10. USA
11. Keene State College
12. Keene
13. Departamento de Quimica Inorganica
14. Universidad de Granada
15. Granada
16. Spain