Rossouw, M., and J. Marais. “The Phenolic Composition of South African Pinotage, Shiraz and Cabernet Sauvignon Wines”. South African Journal of Enology and Viticulture 25, no. 2 (May 2, 2017): 94–104. Accessed February 28, 2026. https://www.journals.ac.za/sajev/article/view/2143.