V. Kouakou, P. M. Niamien, A. J. Yapo, S. Diaby, and A. Trokourey, “Experimental and DFT Studies on the Behavior of Caffeine as Effective Corrosion Inhibitor of Copper in 1M HNO3”, Orbital: Electron. J. Chem., vol. 8, no. 2, pp. 66-79, Apr. 2016.