Janse van Vuuren, Chantelle Y., and Hendrik J. Vermeulen. “Clustering of Wind Resource Data for the South African Renewable Energy Development Zones”. Journal of Energy in Southern Africa 30, no. 2 (June 22, 2019): 126–143. Accessed July 22, 2024. https://journals.assaf.org.za/index.php/jesa/article/view/6316.