TEE, E. R.; SELVANATHAN, N. Enhancing The Personal Identification Number Input As A Means Of Identification Signature. Malaysian Journal of Computer Science, [S. l.], v. 9, n. 1, p. 37–41, 1996. Disponível em: https://ijps.um.edu.my/index.php/MJCS/article/view/2966. Acesso em: 29 may. 2024.