NGCOFE, L.; VAN NIEKERK, A. Advances in optical earth observation for geological mapping: A Review. South African Journal of Geomatics, [S. l.], v. 5, n. 1, p. 1–16, 2016. DOI: 10.4314/sajg.v5i1.1. Disponível em: https://www.ajol.info/index.php/sajg/article/view/131497. Acesso em: 29 sep. 2026.