Conradie, W.J., and P.A. Myburgh. “Fertigation of Vitis Vinifera L. Cv. Bukettraube 110 Richter on a Sandy Soil”. South African Journal of Enology and Viticulture, vol. 21, no. 1, May 2017, pp. 40-47, doi:10.21548/21-1-2186.