Kumar, Anil, K. Gopalan, V. M. Padmakumari, V. P. Kornilova, O. B. Oleinikov, and A. F. Safronov. 1995. “Precise Rb-Sr Ages of Siberian Kimberlites”. International Kimberlite Conference: Extended Abstracts 6 (1):307-7. https://doi.org/10.29173/ikc1873.