Schulze, D.J., J.W. Valley, K.S. Viljoen, and M. Spicuzza. “Carbon Isotope Composition of Graphite in Mantle Eclogites”. International Kimberlite Conference: Extended Abstracts 5 (February 1, 1991): 353–355. Accessed February 6, 2025. https://journals.library.ualberta.ca/ikcabstracts.com/index.php/ikc/article/view/2567.