Chokkanathan, Umapathy, and Kannappan Geetha. “Synthesis, Characterization and in Vitro Cytotoxicity Studies of Pentadentate Ligand and Its Copper(II) Complexes”. Asian Journal of Chemistry, vol. 30, no. 2, Dec. 2017, pp. 411-5, doi:10.14233/ajchem.2018.21049.