Synthesis and Characterization of Some mixed-Ligand Complexes Containing N-acetyl Tryptophan and (2, 2′-bipyridine) with Some Metal Salts. (2017). Ibn AL-Haitham Journal For Pure and Applied Sciences, 25(3), 294-303. https://jih.uobaghdad.edu.iq/index.php/j/article/view/596