1. Department of Physics, Janata Mahavidyalaya, Chandrapur, India
2. Department of Chemistry, Sevadal Mahila Mahavidyalaya, Nagpur, India
3. Department of Physics, R.T.M. Nagpur University, Nagpur, India
4. Department of Chemistry, Shri Ramdeobaba College of Engineering and Management, Nagpur, India