Irving, A.J., and H.E. O'Brien. “Isotopic and Trace Element Remote Sensing of Montana Continental Lithosphere from Erupted Magmas”. International Kimberlite Conference: Extended Abstracts 5 (February 1, 1991): 188–189. Accessed April 26, 2024. https://ikcabstracts.com/index.php/ikc/article/view/2507.