Synthesis and Characterization of Some Mixed-Ligand Complexes Containing Azo Dye and 1,10-phenanthroline with CoII, ZnII, CdII and HgII Ions. (2017). Ibn AL-Haitham Journal For Pure and Applied Sciences, 28(3), 187-203. https://jih.uobaghdad.edu.iq/index.php/j/article/view/152