SHILPA, H. K.; VARSHNEY, M. A survey of payment challenges in fraud detection in digital transactions methodologies. International journal of health sciences, [S. l.], v. 6, n. S3, p. 2041–2052, 2022. DOI: 10.53730/ijhs.v6nS3.5927. Disponível em: https://sciencescholar.us/journal/index.php/ijhs/article/view/5927. Acesso em: 13 may. 2026.