Balík J., Kyseláková M., Vrchotová N., Tříska J., Kumšta M., Veverka J., Híc P., Totušek J., Lefnerová D. (2008) Relations between polyphenols content and antioxidant activity in vine grapes and leaves. In: Czech Journal of Food Sciences (Special Issue). Vol 26, pp. 25-32.