PRAMUSINTO, W.; TRYA SARTANA, B.; MULYATI, S.; AMINI, S. Implementation of AES-192 cryptography and QR code to verify the authenticity of budi luhur university student certificate. Jurnal Pendidikan Teknologi Kejuruan, Padang, Indonesia, v. 3, n. 4, p. 209–215, 2020. DOI: 10.24036/jptk.v3i4.14823. Disponível em: https://jptk.ppj.unp.ac.id/index.php/jptk/article/view/148. Acesso em: 13 mar. 2025.