ALLSOPP, H.L.; KRAMERS, J.D. Rb-Sr and U-Pb age determinations on southern African kimberlite pipes. International Kimberlite Conference: Extended Abstracts, [S. l.], v. 2, n. 1, p. 8–10, 1977. DOI: 10.29173/ikc924. Disponível em: https://ikcabstracts.com/index.php/ikc/article/view/924. Acesso em: 28 apr. 2024.