Gudić, S.; Oguzie, E. E.; Radonić, A.; Vrsalović, L.; Smoljko, I.; Kliškić, M. Inhibition of Copper Corrosion in Chloride Solution by Caffeine Isolated from Black Tea. Maced. J. Chem. Chem. Eng. 2014, 33, 13-25.