Burger, D., G. Jacobs, M. Huysamer, and M. Taylor. “Berry Abscission in Vitis Vinifera L. Cv. Waltham Cross: Changes in Abscission-Related Factors During Berry Development”. South African Journal of Enology and Viticulture, vol. 26, no. 2, Apr. 2017, pp. 71-74, doi:10.21548/26-2-2120.