Determining the relevance of information obtained from some search and reference services located on the web platform. Mathematical Machines and Systems, [S. l.], n. 1, p. 64–75, 2021. DOI: 10.34121/1028-9763-2021-1-64-75. Disponível em: https://www.j-mms.de/index.php/mms/article/view/2021-1-a7. Acesso em: 11 aug. 2026.