PRATIWI, Anita Puji; PRIHANDONO, Trapsilo; PRASTOWO, Sri Handono Budi. Numerical Solution of Radioactive Core Decay Activity Rate of Actinium Series Using Matrix Algebra Method. Jurnal Penelitian Pendidikan IPA, [S. l.], v. 7, n. 3, p. 395–400, 2021. DOI: 10.29303/jppipa.v7i3.716. Disponível em: https://jppipa.unram.ac.id/index.php/jppipa/article/view/716. Acesso em: 4 may. 2024.