D. Saayman and L. Van Huyssteen, “Soil Preparation Studies: I. The Effect of Depth and Method of Soil Preparation and of Organic Material on the performance of Vi tis Vinifera (var. Chenin Blanc) on Hutton/Sterkspruit Soil”, SAJEV, vol. 1, no. 2, pp. 107–121, May 2017.