Z. Serbetci and C. Alkan, “Spectroscopic Studies of 1,10-Phenanthroline-5,6-[4,4’-(ethane-1,2- diilbis(oxy))dibenzenamine] and its Transition Metal Complexes”, ajc, vol. 22, no. 2, pp. 1087–1090, Mar. 2010.