M. Fakhree, F., and S. Kh. Dawood. “Preparation and Characterization of Some Transition Metal Complexes With Two Mixed Ligands Macrocyclic and Ligands PPh3”. Rafidain Journal of Science, vol. 28, no. 4, Dec. 2019, pp. 29-37, doi:10.33899/rjs.2019.163294.