1. P.G. & Research Department of Chemistry, C.P.A. College, Bodinayakanur, Tamil Nadu, India
2. Directorate of Distance Education, Madurai Kamaraj University, Madurai, Tamilnadu, India
3. Mother Teresa Women’s University, Kodaikanal, Tamilnadu, India
4. PG & Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India