SUHARTONO, S.; PRAKOSA, B. A. . .; RITZKAL, R. Design and Build Online Attendance System Using NFC Based on IoT. Jurnal Mantik, [S. l.], v. 5, n. 3, p. 1498-1503, 2021. Disponível em: https://iocscience.org/ejournal/index.php/mantik/article/view/1631. Acesso em: 13 may. 2026.