Lutjen, H., J. Blume, and C.C. Pretorius. “Geophysical Survey over the Elizabeth Bay Mine, Namibia”. International Kimberlite Conference: Extended Abstracts 7, no. 1 (April 17, 1998): 518–520. Accessed April 26, 2024. https://ikcabstracts.com/index.php/ikc/article/view/2789.