Distributed information systems in e-commerce. Mathematical Machines and Systems, [S. l.], n. 2, p. 69–74, 2023. DOI: 10.34121/1028-9763-2023-2-69-74. Disponível em: https://www.j-mms.de/index.php/mms/article/view/2023-2-a7. Acesso em: 11 aug. 2026.