Halleen, F., and G. Holz. 2017. “An Overview of the Biology, Epidemiology and Control of Uncinula Necator (Powdery Mildew) on Grapevine, With Ref Ere Nee to South Africa”. South African Journal of Enology and Viticulture 22 (2):111-21. https://doi.org/10.21548/22-2-2205.