Demonstrative Teaching Experiment to Motivate the Study of Radioactivity with a Research Approach. Revista Cubana de Física, UTC, v. 42, n. 2, p. 103–108, 2025. Disponível em: https://www.revistacubanadefisica.org/index.php/rcf/article/view/63. Acesso em: 16 dec. 2025.