Azeez, L., Oyedeji, A.O., Adewuyi, S.O. and Tijani, K.O. 2016. Syntheses, characterizations and antioxidant activities of copper complexes of quercetin as influenced by redox states. International Journal of Biological and Chemical Sciences. 9, 5 (Feb. 2016), 2712–2718. DOI:https://doi.org/10.4314/ijbcs.v9i5.40.