1. Department of Chemistry, Gudlavalleru Engineering College (Autonomous), Gudlavalleru-521 356, India
2. Department of Chemistry, Bapatla Engineering College (Autonomous), Bapatla-522 10, India
3. Department of Chemistry, GITAM University, Bengaluru Campus, NH-207, Doddaballapur Taluk, Bengaluru Rural District, Karnataka-561203, India