Muala, Adil, and kawkab Ali. “Theoretical Semi-Empirical Calculation of Molecular Structure of Schiff Base Complexes Zn (II).”. University of Thi-Qar Journal of Science 2, no. 4 (June 20, 2019): 96-108. Accessed August 15, 2021. https://jsci.utq.edu.iq/index.php/main/article/view/450.