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