1. Polymer Composites Lab, Division of Chemistry, Department of Sciences & Humanities, Vignan's Foundation for Science, Technology and Research (Deemed to Be University), Guntur, Andhra Pradesh, India
2. Department of Chemistry, Vignan Degree & PG College, Guntur, Andhra Pradesh, India
3. Department of Chemistry, Vignan's Nirula Institute of Technology and Science for Women, Guntur, Andhra Pradesh, India