Lorenz, V. “Formation of Maar-Diatreme Volcanoes and Its Relevance to Kimberlite Diatremes”. International Kimberlite Conference: Extended Abstracts 1 (August 13, 1973): 203–205. Accessed February 15, 2026. https://journals.library.ualberta.ca/ikcabstracts.com/index.php/ikc/article/view/885.