Kudrjavtseva, G., Bushueva, E., Vasiljeva, E., Verichev, E., Garanin, V., Grib, V., … Schepina, N. (1991). Geological Structure and Mineralogy of the Kimberlites of the Archangelsk Kimberlite Province. International Kimberlite Conference: Extended Abstracts, 5, 530–532. https://doi.org/10.29173/ikc2415