Suo, J.L. “Synthesis and Crystal Structure of Bis[2-((E)-(m-tolylimino)methyl)-6-Bromo-4-chlorophenol]copper(II)”. Asian Journal of Chemistry, vol. 23, no. 11, Sept. 2011, pp. 4965-7, https://asianpubs.org/index.php/ajchem/article/view/11021.