SHEIKHSHOAIE, Mahdeyeh, Vahid SAHEB, and Tayebeh SHAMSPUR. 2014. “Density Functional Theory (DFT) With Combined Investigation of the Selectivity of a Symmetrical Tetradentate N2O2-Coordination Schiff Base Ligand for Mn(II) Ion in the Presence of Mixing Mg(II), Mn(II), Ba(II), Ca(II) and Ni(II) Ions”. Walailak Journal of Science and Technology (WJST) 11 (6):517-23. https://wjst.wu.ac.th/index.php/wjst/article/view/753.