HIKMAT ISMAEL, Y.; SHAKEEB MOHAMMED, S. A Survey On E- Payment Systems. IRAQI JOURNAL OF STATISTICAL SCIENCES, [S. l.], v. 21, n. 1, p. 127–137, 2025. Disponível em: https://rjps.uomosul.edu.iq/index.php/stats/article/view/20597. Acesso em: 6 aug. 2025.