JJ Myburgh, AJ Swart, L van Heerden. “Development of a Drive Unit for a Cost-Effective Follow-Focus Control System”. PalArch’s Journal of Archaeology of Egypt / Egyptology 17, no. 9 (November 2, 2020): 6270 - 6283. Accessed December 22, 2024. https://archives.palarch.nl/index.php/jae/article/view/5185.