ADIL, N. Metal Detector With Beat Frequency Method. Journal Basic Science and Technology, [S. l.], v. 11, n. 3, p. 83-87, 2022. DOI: 10.35335/jbst.v11i3.3405. Disponível em: https://iocscience.org/ejournal/index.php/JBST/article/view/3405. Acesso em: 24 apr. 2026.