Hunter, J.J., H.P. Ruffner, and C.G. Volschenk. “Starch Concentrations in Grapevine Leaves, Berries and Roots and the Effect of Canopy Management”. South African Journal of Enology and Viticulture 16, no. 2 (May 5, 2017): 35–40. Accessed February 28, 2026. https://www.journals.ac.za/sajev/article/view/2270.