Anderson, O.L., and P.C. Perkins. “A Plate Tectonics Model Involving Non-Laminar Asthenospheric Flow to Account for Certain Kimberlite Pipes”. International Kimberlite Conference: Extended Abstracts 1 (August 13, 1973): 7–10. Accessed November 21, 2024. https://ikcabstracts.com/index.php/ikc/article/view/833.