Kostrovitsky, S.I., E.M. Verichev, V.K. Garanin, L.V. Suvorova, I.V. Aschepkov, V. Malkovets, and W.L. Griffin. “Megacrysts from Griba Kimberlite Pipe (Arkhangelsk Province)”. International Kimberlite Conference: Extended Abstracts 8 (June 22, 2003). Accessed March 28, 2024. https://ikcabstracts.com/index.php/ikc/article/view/3030.