1. Department of Chemistry, Acharya Nagarjuna University, Guntur, India
2. Department of Chemistry, Andhra Loyola College, Vijawada, India
3. Department of Chemistry, SGS Arts College(TTD), Tirupati, India
4. Department of Chemistry, J.K.C. College, Guntur, India
5. Department of Physics, Vignan Institute of Technology and Science, Deshmukhi, India