Craven, M., P. T. Mokoena, L. . Morey, and A. E. . Saayman-Du Toit. “Effect of Glyphosate Application Time on Yield Parameters of South African Glyphosate-Resistant Maize Cultivars”. South African Journal of Science, vol. 117, no. 7/8, July 2021, doi:10.17159/sajs.2021/8045.