Jha, R.R., and N. Sahu. 2010. “Synthesis and Characterization of Metal(II) Complexes With Macrocyclic Ligand, 1,4,5,7,8,11,12,14-Octaaza-Tetraoxo-6,13-Dithio-1,4,5,7,8,11,12,14- Octahydrocyclotetradecane”. Asian Journal of Chemistry 20 (8):6301-9. https://asianpubs.org/index.php/ajchem/article/view/12978.