Electronic commerce and problems related to e-commerce and e-payment systems. Journal of Media studies, [S. l.], v. 53, n. 2, p. 20–26, 2020. DOI: 10.47344/sdubss.v53i2.323. Disponível em: https://jms.sdu.edu.kz/index.php/jms/article/view/44.. Acesso em: 26 aug. 2025.