Liu, Jin-Biao, et al. “Synthesis and Antibacterial Activities of Novel N-(5-Chloro-O-Hydroxyphenyl) Amino Acid Copper Complexes”. Asian Journal of Chemistry, vol. 23, no. 12, Sept. 2011, pp. 5327-30, https://asianpubs.org/index.php/ajchem/article/view/11140.