1. Department of Chemistry, M. S. J. College (University of Rajasthan), Bharatpur, India
2. Department of Chemistry, Kirori Mal College, University of Delhi, Delhi, India
3. Molecular Biology Research Lab., Department of Zoology, Deshbandhu College, University of Delhi, Delhi, India
4. Department of Chemistry, Deshbandhu College, University of Delhi, Delhi, India