ASSIM, Ola Marwan; PFEIFER , Nils. Technique Bidirectional Visitor Counter. Samarra Journal of Pure and Applied Science, [S. l.], v. 5, n. 3, p. 202–215, 2023. DOI: 10.54153/sjpas.2023.v5i3.585. Disponível em: https://www.sjpas.com/index.php/sjpas/article/view/585. Acesso em: 1 nov. 2025.