Design and Construction of a Multi-User Prepaid Meter. Nigerian Journal of Theoretical and Environmental Physics, [S. l.], v. 1, n. 1, p. 51–59, 2024. DOI: 10.62292/njtep.v1i1.2023.10. Disponível em: https://njtep.nipngr.org/index.php/njtep/article/view/10. Acesso em: 13 sep. 2025.