Keller, J. “Petrogenetic Carbonatite - Melilitite Relationships in the Kaiserstuhl Complex, Upper Rhinegraben”. International Kimberlite Conference: Extended Abstracts 5 (February 1, 1991): 217–218. Accessed December 4, 2024. https://ikcabstracts.com/index.php/ikc/article/view/2517.