“Synthesis and Spectroscopic Characterization of New N4O4 Ligand and Its Transition Metal Ion Complexes with Ni(II), Zn(II) and Cd(II)”, ANJS, vol. 17, no. 4, pp. 27–32, Jun. 2018, Accessed: Apr. 28, 2024. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/373