N. Gayathri and M. Suresh, “Synthesis, Characterization and Antibacterial Studies of VO(IV), Cu(II), Ni(II), Co(II) Chelates of Tetradentate Schiff Base Derived from Benzil and Anthranilic Acid”, ajc, vol. 29, no. 6, pp. 1308–1312, Apr. 2017.