1. Department of Chemistry
2. Guru Nanak Dev University
3. Amritsar-143 005
4. India
5. Department of Microbiology
6. Department of Molecular Biology and Biochemistry
7. Departamento de Quimica Inorganica
8. Facultad de Farmacia
9. Universidad de Santiago
10. 15782-Santiago
11. Spain
12. Keene State College
13. Keene
14. USA