Office, Editorial. “Lys Van Keurders 2008”. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt; 27, no. 4 (September 20, 2008): 309. Accessed May 6, 2025. http://www.satnt.co.za/index.php/satnt/article/view/203.