Antioxidant effect of naturally occurring xanthines on the oxidative damage of DNA basesA. J.S.C. Vieira, J. P. Telo, H. F. Pereira, P. F. PatrocĂnio and R. M.B. DiasJ. Chim. Phys., 96 1 (1999) 116-123DOI: https://doi.org/10.1051/jcp:1999118