Developing a conceptual model of a web assistant for shopping in hypermarkets. Mathematical Machines and Systems, [S. l.], n. 1, p. 124–133, 2025. DOI: 10.34121/1028-9763-2025-1-124-133. Disponível em: https://www.j-mms.de/index.php/mms/article/view/2025-1-a12. Acesso em: 11 aug. 2026.