Pandey, R.N., and Kalpana Shahi. “Synthesis and Characterization of Some Oxo-Cations Complexes With Heterocyclic Thioamide Ligand”. Asian Journal of Chemistry, vol. 23, no. 10, Aug. 2011, pp. 4467-9, https://asianpubs.org/index.php/ajchem/article/view/10881.