FERNANDEZ, ANNETTE, V.K REMA DEVI, and ANNIE GEORGE. 2010. “Studies on Synthesis, Characterization and Antimicrobial Activity of Some Oxocation Chelates of Pyrazolone Based Ligands”. Asian Journal of Chemistry 19 (1):517-22. https://asianpubs.org/index.php/ajchem/article/view/20520.