J. Fourie, P. Louw, and G. Agenbag, “Cover Crop Management in a Sauvignon Blanc/Ramsey Vineyard in the Semi-Arid Olifants River Valley, South Africa. 2. Effect of Different Cover Crops and Cover Crop Management Practices on Grapevine Performance”, SAJEV, vol. 28, no. 2, pp. 81–91, Dec. 2016.