Adharvana Chari, M., et al. “Synthesis, Characterization and Biological Activity of Fe(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) Complexes of Tridentate Thiosemicarbazones”. Asian Journal of Chemistry, vol. 24, no. 1, Sept. 2011, pp. 11-14, https://asianpubs.org/index.php/ajchem/article/view/15933.