NOGUEIRA, Guilherme Augusto Lisboa; PARREIRA, Paulo Sérgio; SCORZELLI, Rosa Bernstein; APPOLONI, Carlos Roberto. Study of Portuguese Coins Issued During the Reign of D. João with pXRF Technique and Multivariate Analysis. Semina: Ciências Exatas e Tecnológicas, [S. l.], v. 46, p. e52402, 2025. DOI: 10.5433/1679-0375.2025.v46.52402. Disponível em: https://www.ojs.uel.br/revistas/uel/index.php/semexatas/article/view/52402. Acesso em: 31 jan. 2026.