Lyu, X., L. Araujo, S.-Y. Quek, W. du Toit, and P. Kilmartin. “Effect of Oxygen and Nitrogen Sparging During Grape Fermentation on Volatile Sulphur Compounds”. South African Journal of Enology and Viticulture, vol. 42, no. 2, Aug. 2021, pp. 154-6, doi:10.21548/42-2-4542.