1. The Handbook of Natural Flavonoids;Harborne,1999
2. The Flavonoids: Advances in Research since 1986;Harborne,1993
3. USDA Database for the Flavonoid Content of Selected Foods—2003http://www.nal.usda.gov/fnic/foodcomp/Data/Flav/flav.html
4. Flavonoids: Antioxidants or signalling molecules?;Williams;Free Radic. Biol. Med,2004
5. http://www.who.int/mediacentre/factsheets/fs317/en/index.html