V. Sreenivas, G. Srikanth, C. Vinutha, M. Shailaja, P. M. Reddy, and R. Vadde, “Synthesis, Spectral Characterization and Antimicrobial Studies of Co(II) Complexes with Tetradentate Schiff bases Derived from Ortho-Phthalaldehyde”, JAC, vol. 9, no. 1, pp. 1873–1882, May 2016.