K. Agarwal, Suresh, and Subhash Chand. “Synthesis and Structural Characterisation of Some New Ternary Complexes of Co(II and III) and Ni(II) ”. Asian Journal of Chemistry, vol. 12, no. 4, Mar. 2010, pp. 1311-4, https://asianpubs.org/index.php/ajchem/article/view/23170.