Lokhande, Manohar, et al. “Synthesis and Characterization of Lanthanide(III) Ion Complexes With 2-Methoxy-4-Amino-5-Chloro-N-[2-(diethylamino)ethyl]benzamide ”. Asian Journal of Chemistry, vol. 15, no. 3, Mar. 2010, pp. 1769-74, https://asianpubs.org/index.php/ajchem/article/view/21899.