V. Sharygin, A. Golovin, S. Smirnov, and V. Malkovets, “Relationship between websterite xenolith and host basanite (pipe Bele, Khakasia, Russia): evidence from fluid and silicate-melt inclusions in minerals”, IKC abstracts, vol. 7, no. 1, pp. 788–790, Apr. 1998.