A. Anjum, S. Paswan, M. Kumar, H. Ali, and R. K. Dubey, “Synthesis, Characterization and DFT Studies of Some Co(II) and Cu(II) Complexes of 12-Membered Tetradentate [N4] Macrocyclic Schiff Base Derived from 9,10-Phenanthrenequinone”, ajc, vol. 31, no. 4, pp. 943–950, Feb. 2019.