JAKUBEC, J. Mining for diamonds – history and present. International Kimberlite Conference: Extended Abstracts, [S. l.], v. 11, 2017. DOI: 10.29173/ikc4008. Disponível em: http://ikcabstracts.com/index.php/ikc/article/view/4008. Acesso em: 22 jan. 2021.