SHAKEEB MOHAMMED, S.; HIKMAT ISMAEL, Y. A Survey On E- Payment Systems. IRAQI JOURNAL OF STATISTICAL SCIENCES, [S. l.], v. 21, n. 1, p. 127–137, 2024. DOI: 10.33899/iqjoss.2024.183253. Disponível em: https://stats.uomosul.edu.iq/index.php/stats/article/view/29024. Acesso em: 14 sep. 2025.