Laz'ko, E.E., and V.P. Serenko. “Unequilibrated Ultramafic Xenoliths from Udachnaya Kimberlite Pipe, Western Yakutia”.
International Kimberlite Conference: Extended Abstracts
, vol. 5, Feb. 1991, pp. 228-30, doi:10.29173/ikc2522.