Van Zyl, J. L., and L. van Huyssteen. “Comparative Studies on Wine Grapes on Different Trellising Systems: I. Consumptive Water Use”. South African Journal of Enology and Viticulture 1, no. 1 (May 12, 2017): 7–14. Accessed February 20, 2026. https://www.journals.ac.za/sajev/article/view/2409.