Devyatkin, V. N., and V. V. An. “Permafrost-Thermal Conditions of Kimberlite Tubes OfYakutia”. International Kimberlite Conference: Extended Abstracts 6, no. 1 (September 19, 1995): 132–134. Accessed April 29, 2024. https://ikcabstracts.com/index.php/ikc/article/view/1807.