Lorenz, V.; Kurszlaukis, S.; Stachel, T.; Brey, G.; Stanistreet, I.; Franz, L. Volcanology of the Diatreme-Rich Carbonatitic Gross Brukkaros Volcanic Field and of the Nearby Gibeon Kimberlite Province, Namibia. IKC abstracts 1995, 6, 333-335.