D.GOPALA KRISHNA, N.DEVANNA, and K.B.CHANDRASEKHAR. 2011. “Comparative Study of Cobalt (ii) Using 4-Hydroxy 3, 5 Dimethoxy Benzaldehyde 4-Hydroxy Benzoyl Hydrazone and Cinnamaldehyde 4-Hydroxy Benzoylhydrazone in Presence of Micellar Medium by Spectrophotometry”. International Journal of Pharma and Bio Sciences 2 (1):341-54. https://ijpbs.net/index.php/journal/article/view/555.