OUGHA, C. S.; KRIEL, A. Ammonia Concentrations of Musts of Different Grape Cultivars and Vineyards in the Stellenbosch Area. South African Journal of Enology and Viticulture, [S. l.], v. 6, n. 1, p. 7–11, 2017. DOI: 10.21548/6-1-2353. Disponível em: https://www.journals.ac.za/sajev/article/view/2353. Acesso em: 18 feb. 2026.