Synthesis of barium ferrite using barite ore. International Seven Journal of Multidisciplinary, [S. l.], v. 3, n. 3, p. 981–986, 2024. DOI: 10.56238/isevmjv3n3-008. Disponível em: https://sevenpubl.com.br/ISJM/article/view/4525. Acesso em: 21 aug. 2025.