FARHAD, M. H.; SARIM, H. M.; IDRUS, B. B. Procedural Database Normalization Level Validation for Electronic Certificate Issuance. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 16, n. 1, p. 251–260, 2014. Disponível em: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/2286. Acesso em: 3 jul. 2024.