Pretorius, I. 2003. “The Genetic Improvement of Grapevine Cultivars and Wine Yeast Strains: Novel Approaches to the Ancient Art of Winemaking”. Suid-Afrikaans Tydskrif Vir Natuurwetenskap En Tegnologie / <i>South African Journal of Science and Technology</I&gt; 22 (1), 31-43. https://doi.org/10.4102/satnt.v22i1.208.