van Staden, J., H. Volschenk, H.J.J. Van Vuuren, and M. Viljoen-Bloom. 2017. “Malic Acid Distribution and Degradation in Grape Must During Skin Contact: The Influence of Recombinant Malo-Ethanolic Wine Yeast Strains”. South African Journal of Enology and Viticulture 26 (1):16-20. https://doi.org/10.21548/26-1-2114.