1. Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar - 522 510, Andhra Pradesh, India
2. Centre for Applied Science, Department of Basic Sciences &Humamities, Division of Chemistry, Sri Vidyanikethan Engineering College (Autonomous), Tirupati - 517 102, Andhra Pradesh, India
3. Department of Chemistry, Jagarlamudi Kuppuswamy Choudary College, Guntur - 522 006, Andhra Pradesh, India