M. E.M. Zayed and R. M. El-Shishtawy, “Synthesis and Antimicrobial Activity of Aluminium(III), Nickel(II) and Zinc(II) Schiff base Complexes Derived from o-Phenylenediamine and Salicylaldehyde”, ajc, vol. 25, no. 5, pp. 2719–2721, Dec. 2012.