Haba, Pokpa, et al. “Synthesis, Spectroscopic Studies and X-Ray Structure Determination of Two Mononuclear Copper Complexes Derived from the Schiff Base Ligand N,N-Dimethyl-N’-((5-Methyl-1H-Imidazol-4-yl)methylene)ethane-1,2-Diamine”. European Journal of Chemistry, vol. 10, no. 3, Sept. 2019, pp. 201-8, doi:10.5155/eurjchem.10.3.201-208.1881.