Brakhfogel, F.F., A. I. Zaitsev, and N. I. Nenashev. 1995. “Isotopic Dating of Kimberlite and Related Rocks in the N.-E. The Siberian Platform”. International Kimberlite Conference: Extended Abstracts 6 (1):63-65. https://doi.org/10.29173/ikc1782.