Dighade, S.R., M.L. Narwade, and M.M. Chincholkar. 2010. “Studies of Proton-Ligand and Metal-Ligand Stability Constants of Cu(II) and Ni(II) Complexes of Substituted 1,3-Thiazines”. Asian Journal of Chemistry 13 (3):1127-32. https://asianpubs.org/index.php/ajchem/article/view/22748.