1. S.O.S in chemistry, Jiwaji University, Gwalior, M. P., India
2. Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra, U.P., India
3. Department of Chemistry, Indian Institute of Technology, Kanpur, U.P., India
4. Department of Basic and Applied Sciences, School of Engineering and Sciences, G D Goenka University, Gurugram, Haryana, India
5. USIC, Dayalbagh Educational Institute Agra, U.P., India