W. Al-Tuhafy, Z. “Preparation, Charaterization and Study of Cobalt (II), Nickel (II), Copper (II) and Zinc (II) Complexes of Some Schiff Bases”. Journal of Education and Science, vol. 23, no. 4, Dec. 2010, pp. 36-43, doi:10.33899/edusj.2010.59254.