Jacinto Darias-Martín, Beatriz Martín-Luis, Marta Carrillo-López, Rosa Lamuela-Raventós, Carlos Díaz-Romero, Roger Boulton,
Effect of caffeic acid on the color of red wine. Journal of Agricultural and Food Chemistry. ,vol. 50, pp. 2062- 2067 ,(2002) ,
10.1021/JF010931+