VERY LOW FREQUENCY (VLF). Journal of Renewable Engineering, [S. l.], v. 1, n. 2, p. 8–15, 2024. DOI: 10.62872/br0bzb82. Disponível em: https://ejournal-nawalaedu.com/index.php/JORE/article/view/216. Acesso em: 30 nov. 2025.