1. Department of Chemistry, Sri Sai University, Palampur, India
2. Center of Nanoscience and Nanotechnology, Panjab University, Chandigarh, India
3. Department of Microbial Biotechnology, Panjab University, Chandigarh, India
4. Department of Physics, MCMDAV College Kangra, Kangra, India
5. Department of Chemistry, Government Degree College, Khundian, Kangra, H.P., India