“SYNTHESIS AND CHARACERISATION OF NOVEL PENTADENTATE LIGAND TYPE N2S2O 4-METHYL-2,6- BIS[4-METHYL THIOSEMICARBAZONYLIDEN]- PHENOL AND THEIR COMPLEXES WITH Ni+2 , Pd+2 , Cu+2 , Zn+2 , Cd+2 and Hg+2”. Al-Nahrain Journal of Science, vol. 12, no. 2, Aug. 2018, pp. 25-34, https://mail.anjs.edu.iq/index.php/anjs/article/view/1235.