INDRYATI, Suci et al. Analytical Method Validation of Thorium in Ore Sample Using UV-Vis Spectrophotometer. EKSPLORIUM, [S. l.], v. 44, n. 2, p. 75–80, 2024. DOI: 10.55981/eksplorium.2023.8173. Disponível em: https://ejournal.brin.go.id/eksplorium/article/view/8173. Acesso em: 3 feb. 2026.