PYBUS, G.; TIYEDZE, K.; ARMSTRONG, J. New surprises at old discoveries: exploration and sampling of the AK11 kimberlite, Orapa kimberlite field, Botswana. International Kimberlite Conference: Extended Abstracts, [S. l.], v. 11, 2017. DOI: 10.29173/ikc3994. Disponível em: http://ikcabstracts.com/index.php/ikc/article/view/3994. Acesso em: 29 oct. 2020.