Al-Karkhi, I. H. T. “Synthesis, Characterization, Bioactivity and Cytotoxicity of NS Schiff Base and Its Ni (II), Cd(II) and Zn(II) Metal Complexes”. University of Thi-Qar Journal of Science, Vol. 4, no. 2, July 2019, pp. 52-58, https://www.jsci.utq.edu.iq/index.php/main/article/view/594.